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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.
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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}}.

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current02:03, 17 December 2011Thumbnail for version as of 02:03, 17 December 2011558 × 921 (89 KB)Lkcl (talk | contribs)Expired patent US2122676

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