FDD patents collage


Autor:
Ralph Flores, Herbert E. Thompson, Warren L. Dalziel, Jay B. Nilson, Donald L. Wartner
Credit:

U.S. Patent 3,668,658, Fig. 2,

U.S. Patent 3,678,481, Fig. 1.
Krótki link:
https://www.plwiki.pl/b/5bdd2
źródło:
Wikimedia Commons
Wymiary:
2900 x 2610 Pixel (82398 Bytes)
Opis:
Drawings from IBM floppy disk drive patents
Licencja:
Public domain
Komentarz do licencji:
Public domain The text and illustrations of US patents published before March 1, 1989 are in the public domain unless the patent text contains a specific notice that portions are copyrighted. See 37 CFR 1.71(d), 37 CFR 1.84(s)

The original patent contains no such notice, so its contents are in the public domain. Note: This only applies to images published before March 1, 1989. Patents published after that date are most likely copyrighted, unless in the public domain for another reason, such as {{PD-ineligible}}.


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