Talk:Geiss

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Ha I see in the page history that 11 years ago in one of my own edits I attributed all "Sandmar" lenses for Argus C3 to Geiss. Since then I've seen enough 1950s instances of "Sandmar" offered as a first-party product from Argus (although manufactured in Germany) that I'm doubting Geiss had the trademark first. Was it actually a trademark licensed to both by Enna Werk?--Vox (talk) 14:06, 18 October 2022 (UTC)

Okay, I see that I wasn't entirely wrong in my 2011 edit—but the picture is still confusing:


This photo shows a patent number for a telephoto lens credited to a Munich/München inventor (home of Enna), assigned to "Harry J. Graw" of Chicago (home of Geiss-America). I also find this later patent for a wide-angle from this same duo. Significantly the Sandmar 35mm often seems engraved "US patent pending."--Vox (talk) 21:48, 18 October 2022 (UTC)