Íomhá:Alexander Graham Bell's Telephone Patent Drawing and Oath - NARA - 302052 (page 2).jpg

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English: Alexander Graham Bell's Telephone Patent Drawing, 03/07/1876. Bell's telephone was the first apparatus to transmit human speech via machine. His work culminated in one of the most profitable and contested of all 19th-century patents. From the National Archives.
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This media is available in the holdings of the National Archives and Records Administration, cataloged under the National Archives Identifier (NAID) 302052.

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Údar Alexander Graham Bell

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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):

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.

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2004-12-15 05:50 864×1200× (154102 bytes) Brian0918 Alexander Graham Bell's Telephone Patent Drawing, 03/07/1876. Bell's telephone was the first apparatus to transmit human speech via machine. His work culminated in one of the most profitable and contested of all 19th-century patents. From the National A

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7 Márta 1876Gregorian

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Dáta/AmMionsamhailToisíÚsáideoirNóta tráchta
faoi láthair10:36, 30 Bealtaine 2015Mionsamhail do leagan ó 10:36, 30 Bealtaine 2015864 × 1,200 (150 KB)MddTransferred from en.wikipedia

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