File:US02632058 Gray.png

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English: Top of front page of Frank Gray's US patent 2632058, showing PCM tube 10 with plate 15 in reflected binary code pattern.
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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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The original description page was here. All following user names refer to en.wikipedia.
  • 2006-09-10 04:19 Dicklyon 1600×1114 (162446 bytes) Top of front page of Frank Gray's US patent 2632058, showing PCM tube 10 with plate 15 in reflected binary code pattern.

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Frank Gray

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Date/TimeThumbnailDimensionsUserComment
current15:24, 27 August 2008Thumbnail for version as of 15:24, 27 August 20081,600 × 1,114 (159 KB)File Upload Bot (Magnus Manske) {{BotMoveToCommons|en.wikipedia}} {{Information |Description={{en|Top of front page of Frank Gray's US patent 2632058, showing PCM tube 10 with plate 15 in reflected binary code pattern.}} |Source=Transferred from [http://en.wikipedia.org en.wikipedia];

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