File:Scherbius-1928-patent.png
Scherbius-1928-patent.png (641 × 406 pixels, file size: 214 KB, MIME type: image/png)
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In general, the contents of United States patents are in the public domain.
In specific cases, patent applicants and holders may claim copyright in portions of those documents. In those specific cases, applicants are required to identify the portions that are protected under copyright, and are additionally required to state the following within the body of the application and patent (see 37 CFR 1.71(d) & (e) and 37 CFR 1.84(s), and MPEP § 608.01(e) & (w) and MPEP § 1512):
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 21:37, 26 September 2005 | 641 × 406 (214 KB) | Jeanot (talk | contribs) | * '''Description:''' Image from 1928 US patent 1,657,411 (Enigma machine) by Arthur Scherbius (died 1929). {{PD-US-patent}} |
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