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Image: FDD patents collage

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Description: Drawings from IBM floppy disk drive patents
Title: FDD patents collage
Credit: U.S. Patent 3,668,658, Fig. 2, U.S. Patent 3,678,481, Fig. 1.
Author: Ralph Flores, Herbert E. Thompson, Warren L. Dalziel, Jay B. Nilson, Donald L. Wartner
Permission: Public domainPublic domainfalsefalse 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 Template:PD-ineligible.
Usage Terms: Public domain
License: Public domain
Attribution Required?: No

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