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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.
Usage Terms: Public domain
License: Public domain
Attribution Required?: No

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