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This is an old revision of this page, as edited by Kimchi.sg (talk | contribs) at 17:42, 19 October 2006 (retag PD-US-patent). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

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First page of U.S. Patent No. 821,393 (Airplane Invention)

The original image is from a United States Patent Office web page located at .

Licensing

In general, the contents of United States patents are in the public domain in the US. 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: (archived) A portion of the disclosure of this patent document contains material which is subject to (copyright or mask work) protection. The (copyright or mask work) owner has no objection to the facsimile reproduction by anyone of the patent document or the patent disclosure, as it appears in the Patent and Trademark Office patent file or records, but otherwise reserves all (copyright or mask work) rights whatsoever. The original patent should be checked for the presence of such language before an assumption is made that the contents are in the public domain. This template can be replaced by {{PD-US-patent-no notice}} in such cases. PD Public domain false false

The nature of the copyrighted work is a digitized image of a U.S. Patent Drawing. U.S. Patent Drawing are not protected by copyright when utilized to illustrate the object in question. The purpose and character of the use of the present image is for nonprofit educational purposes. The amount and substantiality of the portion used in relation to the copyrighted work as a whole is about 100%, and the use will have no effect upon the potential market for or value of the copyrighted work.

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	19:12, 12 October 2006		600 × 868 (62 KB)	Jreferee (talk | contribs)

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• Harry Aubrey Toulmin Sr.

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• Images from US patents
• PD-US-patent