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File:USPTO Telephone Patent No. 174465.jpg

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Summary

Description
English: An image of the master telephone patent awarded to Alexander Graham Bell. The patent was arguably the most valuable every awarded in history.
Date
Source Image provided from this historical article: http://www.corp.att.com/history/inventing.html
Author U.S.P.T.O.
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Public domain
This media file is in the public domain in the United States. This applies to U.S. works where the copyright has expired, often because its first publication occurred prior to January 1, 1930, and if not then due to lack of notice or renewal. See this page for further explanation.
United States
United States
This image might not be in the public domain outside of the United States; this especially applies in the countries and areas that do not apply the rule of the shorter term for US works, such as Canada, Mainland China (not Hong Kong or Macao), Germany, Mexico, and Switzerland. The creator and year of publication are essential information and must be provided. See Wikipedia:Public domain and Wikipedia:Copyrights for more details.

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Public domain
This work is in the public domain in the United States because it is a work prepared by an officer or employee of the United States Government as part of that person’s official duties under the terms of Title 17, Chapter 1, Section 105 of the US Code. Note: This only applies to original works of the Federal Government and not to the work of any individual U.S. state, territory, commonwealth, county, municipality, or any other subdivision. This template also does not apply to postage stamp designs published by the United States Postal Service since 1978. (See § 313.6(C)(1) of Compendium of U.S. Copyright Office Practices). It also does not apply to certain US coins; see The US Mint Terms of Use.
This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights.

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inception

March 1876Gregorian

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Date/TimeThumbnailDimensionsUserComment
current19:58, 8 May 2012Thumbnail for version as of 19:58, 8 May 2012415 × 622 (241 KB)HarryzilberUploaded a higher resolution image of the same document; located via TinEye.
15:56, 2 December 2010Thumbnail for version as of 15:56, 2 December 2010415 × 622 (241 KB)Harryzilber{{Information |Description={{en|1=An image of the master telephone patent awarded to Alexander Graham Bell. The patent was arguably the most valuable one every awarded in history.}} |Source=Image provided from this historical

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Quelle: http://en.wikipedia.org/wiki/File:USPTO_Telephone_Patent_No._174465.jpg