File:Bucklingspring1-o.svg
Size of this PNG preview of this SVG file: 360 × 381 pixels. Other resolutions: 227 × 240 pixels | 454 × 480 pixels | 726 × 768 pixels | 968 × 1,024 pixels | 1,935 × 2,048 pixels.
Original file (SVG file, nominally 360 × 381 pixels, file size: 25 KB)
 | This is a file from the Wikimedia Commons. Information from its description page there is shown below. Commons is a freely licensed media file repository. You can help. |
Summary
| Description | . Was used in the Model F and was the base of the Model M "membrane buckling spring switch". |
| Date | |
| Source | U.S. Patent 4,118,611 / File:IBM buckling spring.svg |
| Author | Richard Hunter Harris |
Licensing
|
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}}. |
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 15:25, 31 December 2013 | | 360 × 381 (25 KB) | Shaddim | User created page with UploadWizard |
File usage
The following pages on the English Wikipedia use this file (pages on other projects are not listed):
Global file usage
The following other wikis use this file:
- Usage on bg.wikipedia.org
- Usage on de.wikipedia.org
- Usage on es.wikipedia.org
- Usage on ha.wikipedia.org
