|
Hi Brian,
I looked into this a few years back, and searched both the hardcopy Catalog of Copyright Entries books at the San Jose Library and also the online catalogs at the USPTO. I found evidence of the original copyrights for Sams Photofacts, but found no evidence whatsoever for renewals. Since renewals were required, copyrights on pre-1964 Photofacts expired if they were not renewed.
From your post, it sounds like you may also have done this kind of search and found evidence of renewal. If so, can you provide specific information where I can confirm it?
I would be more than happy to respect any in-force copyrights that Sams may have. I've only provided them for posting at ETF on the conclusion from my earlier research that pre-1964 Sams Photofacts are no longer protected by copyright.
If it turns out that all Sams Photofacts are under valid copyright protection, we'll stick to posting only Rider TV material, and remove the Sams.
By the way, the Rider TV material is, in my opinion, even more useful than the Sams. There is a lot more detail there, expecially text explanation of how the circuitry is designed, etc.
Tom
|