File:Us2122676 fig1.png
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| Description |
English: Expired patent US2122676 |
| Source |
Digital reproduction or scan of original patent. Under US laws mechanical reproduction of a work does not create an additional copyright to that of the original. |
| Author |
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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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 02:03, 17 December 2011 | | 558 × 921 (89 KB) | Lkcl (talk | contribs) | Expired patent US2122676 |
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