File:Palisek's D-pad patent.jpg
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Size of this preview: 449 × 599 pixels. Other resolutions: 180 × 240 pixels | 360 × 480 pixels | 576 × 768 pixels | 768 × 1,024 pixels | 1,716 × 2,289 pixels.
Original file (1,716 × 2,289 pixels, file size: 343 KB, MIME type: image/jpeg)
Summary
| Description |
English: Multiple dome switch assembly having pivotable common actuator |
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| Date | ||||
| Source | https://patents.google.com/patent/US4256931A/en | |||
| Author | William F. Palisek | |||
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Licensing
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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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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 21:49, 18 June 2025 | | 1,716 × 2,289 (343 KB) | wikimediacommons>RickyCourtney | File:US4256931A.pdf cropped 26 % horizontally, 33 % vertically, 50 % areawise using CropTool with precise mode. |
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