Help on How to Search a Patent Date?

ipsilateral

ipsilateral

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Jan 5, 2005
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Anyone know a site or method to search patents from a particular day when no patent number is present?


I have a lamp here and I am trying to identify it. The lamp says, "MADE IN GERMANY", "US PAT, MAY 6TH 1930". I have identified the glass itself as having come from the Kokomo Opalescent Glass factory in Indiana-- "America's oldest art glass factory". A representative at Kokomo wrote me this:

"What an outstanding lamp! Well, they sent you to the right place. The glass is our color number #99 which is still in production today. Our resident expert on glass colors suggests that you check with the US Patten office for more information about the lamp, maker, and patten information. The shade is a very good match to the base and may or may not have come together. If you need a piece to replace something with, just let me know. Also, would love to use the photo on our website if you are agreeable."
 

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The patent could be for the lamp, the glass, for the elcetric socket, switch, whatever, or even the design and that makes for a lot of searching.


You can sometimes search that date on regular Google and get lucky but I already tried.


Where is the patent stamped?
 

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That's a good point. It could be some small feature. Back to square one on figuring out the maker. Thanks for your thoughtful responses.

Nate
 

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The patent can be found. Where is the patent stamped? Can you take a picture of it?
 

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The marks are pretty tough to read in a photo because the bronze is quite corroded in that area-- which of course also gives it that lush green patina. I did forget to mention that one of the marks says: "PH-4" which is maybe a model number-- I don't know. At any rate, also there is the date and the words "US PATENT". These are on the bronze part of the lamp, not the glass and I think the patent may refer to this unusual telescoping in the base that allows you to increase the height about 6 inches.

For some reason I can't get the photos of the mark to upload tonight...

I bought it online from a Florida seller who bought it at an estate sale. It was etremely dirty when it arrived as if it had been in a garage for a long time. But, it has been rewired at some point pretty recently.
 

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The reason I asked for a picture is because I need the exact wording in the exact order before I can search.
 

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The picture is good. Can you take a guess on the order?

Was "US PATENT" before or after the date?

...and where does "PH-4" fit in?
 

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My best guess is that it would read: PH-4 US PATENT MAY 6TH 1930. But the way it's engraved around a circle, it could be in any order. I have no idea what that PH-4 means..Hopefully it will ring someone's bell. Thanks for putting that picture up.
 

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The most common use for the term "PH" I was able to find was "Phase." But if this applies to the lamp or not, I can't say. And if it does apply, I'm not sure if it pertains to the electrical or the design aspect. :dontknow:

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I am convinced that PH stands for Poul Henningsen. However, I have a couple of concerns. The majority of his designs can best be described as "Danish Modern." For example, the PH-Artichoke lamp shown below is noted as his most famous design. And the majority of his lamps fall into this same "modern looking" category. So far I have been unable to find the stag lamp in question here, nor anything quite like it. Maybe it was "designed" by Henningsen, but made by someone else. :dontknow:

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[ PH-Artichoke Chandelier - 1958 ]
 

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I may be chasing wild geese here, but until something throws me off the trail, I am sticking with Poul Henningsen. In my travels, I discovered that most if not all of the PH designs were manufactured by a Louis Poulsen. Poulsen's individual works also appear to be Danish modern.

The only thing I have found so far that even comes close to the stag lamp is the one pictured below. It too is from the 1930s/40s and is marked with PH. But whether it is a true Poul Henningsen design or not, I cannot say. The information with it was sketchy at best. The seller said he did not know what the PH stood for.

So if the lamp below is a true Poul Henningsen, then at least we know he did some more traditional stuff. :dontknow:

Edit/Add: PH mark on shade

I'll be back!

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I had a little time on my hands today doing laundry and what-not, so I was able to devote a good two hours of looking for and at Poul Henningsen/Louis Poulsen lamps ... but I gotta tell ya, except for the last picture I posted, I didn't find a single one that even came close. And certainly nothing with a stag/deer base. I'm still convinced there is a connection somewhere, and that this lead is worth following. Except that I may have to pass the torch to someone else who has better searching skills than I do. I likely won't be back unless I find something along the way that is more substantial.

Good luck. I will watch with anticipation for the e-mail notification from the individual who finally identifies that sucker. :icon_thumleft:

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SODABOTTLEBOB said:
I had a little time on my hands today doing laundry and what-not, so I was able to devote a good two hours of looking for and at Poul Henningsen/Louis Poulsen lamps ... but I gotta tell ya, except for the last picture I posted, I didn't find a single one that even came close. And certainly nothing with a stag/deer base. I'm still convinced there is a connection somewhere, and that this lead is worth following. Except that I may have to pass the torch to someone else who has better searching skills than I do. I likely won't be back unless I find something along the way that is more substantial.

Good luck. I will watch with anticipation for the e-mail notification from the individual who finally identifies that sucker. :icon_thumleft:

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I found the same things, and I gotta tell you i'm skeptical as to Louis Poulsen and Poul Henningsen lamps, the PH4 is what took me to Henningsen but the designs of both of these makers for the most part have a more modernistic type of styling to them. Not to say that it isn't possible though. I've looked at other famous makers of the era such as Bradley & Hubbard, Miller and even Handel,( thinking maybe it was a lower "grade" Handel if you will), I found these as style comparisons but nothing any better.

Handeltablelamp.jpg
Handel

miller%20slag%20lamp4-1.jpg
Miller

bradley hubbard.jpg
Bradley & hubbard

What does the lettering on the underside of the shade on the glass panels say?
I'm still looking for an Elk or Stag base that is close. I see green verdigris color on part of the base. Is it bronze or bronze coated? Can we get a better picture of the bulb attachment as well as the way the shade attaches?
 

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