Jump to content

File:FDD patents collage.png

Page contents not supported in other languages.
This is a file from the Wikimedia Commons
From Wikipedia, the free encyclopedia

Original file (2,900 × 2,610 pixels, file size: 80 KB, MIME type: image/png)

Description
English: Drawings from IBM floppy disk drive patents
Date 1969, 1970
Source

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
(Reusing this file)
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}}.

Captions

Add a one-line explanation of what this file represents

Items portrayed in this file

depicts

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current00:23, 10 February 2015Thumbnail for version as of 00:23, 10 February 20152,900 × 2,610 (80 KB)Mikhail Ryazanov{{Information |Description= {{en|Drawings from IBM Floppy Disk Drive Patents}} |Source= [http://www.google.com/patents/US3668658 Magnetic record disk cover US 3668658 A], Fig. 2,<br/> [http://www.google.com/patents/US3678481 Data storage apparatus empl...

The following page uses this file:

Global file usage

The following other wikis use this file:

Retrieved from "https://en.wikipedia.org/wiki/File:FDD_patents_collage.png"