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Summary

Description
English: Drawing showing a Brannock Device, taken from US Patent 1,725,334.
Deutsch: Zeichnung eines Brannock-Geräts aus dem US-Patent 1,725,334.
Date (filed)
Source US Patent Office
Author Charles Brannock
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}}.

Licensing

This work is in the public domain in the United States because it was published in the United States between 1929 and 1977, inclusive, without a copyright notice. For further explanation, see Commons:Hirtle chart as well as a detailed definition of "publication" for public art.
Note that it may still be copyrighted in jurisdictions that do not apply the rule of the shorter term for US works (depending on the date of the author's death), such as Canada (50 p.m.a.), Mainland China (50 p.m.a., not Hong Kong or Macao), Germany (70 p.m.a.), Mexico (100 p.m.a.), Switzerland (70 p.m.a.), and other countries with individual treaties.

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inception

17 September 1927Gregorian

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Date/TimeThumbnailDimensionsUserComment
current16:17, 6 January 2009Thumbnail for version as of 16:17, 6 January 20091,665 × 2,599 (578 KB)Cfaerber{{Information |Description={{en|1=Drawing showing a en:Brannock Device, taken from US Patent 1,725,334.}} {{de|1=Zeichnung eines Brannock-Geräts aus dem US-Patent 1,725,334.}} |Source=US Patent Office |Author=Charles Brannock |Date=1927-09-17 (file

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