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Re: stainless steel Quadron [message #15542 is a reply to message #15537] Sun, 19 September 2021 02:26 Go to previous message
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Registered: May 2019
Location: Cincinnati
Gruen Authority
Thanks to Ephemerald for turning me on to the lawsuit text. The case was Kay Jewelry Co. v. Gruen Natl. Watch Case Co., previously mentioned on the forum. Gruen lost the appeal on May 13 1930.

Reading through the court doc, the 1926 Beiser process patent was abolished. While not specifically mentioned in the case, the language of the court is clear enough that any future defense of the 1922 design patent would’ve been fruitless. So both died on May 13 1930.

Key nugget: any watch with the March 1922 (tanks) or Feb 1926 patents was made before May 1930; this watch is clearly after.

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