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File:United States patent 1108529.pdf

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Charles R. Underhill: Telegraph System  wikidata:Q126855030 reasonator:Q126855030 https://en.wikisource.org/wiki/Index:United_States_patent_1108529.pdf
Author
Charles R. Underhill  (1877–1947)  wikidata:Q73423551 s:en:Author:Charles Reginald Underhill
 
Alternative names
Charles Reginald Underhill
Description American inventor and writer
Date of birth/death 1877 Edit this at Wikidata 1947 Edit this at Wikidata
Authority file
creator QS:P170,Q73423551
 Edit this at Wikidata
image of artwork listed in title parameter on this page
Title
Telegraph System Edit this at Wikidata
title QS:P1476,en:"Telegraph System Edit this at Wikidata"
label QS:Len,"Telegraph System Edit this at Wikidata"
Object type version, edition or translation Edit this at Wikidata
Description
Telegraph system
Language English Edit this at Wikidata
Publication date 25 August 1914 Edit this at Wikidata
Source https://patents.google.com/patent/US1108529A
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This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.
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 In general, the contents of United States patents are in the public domain.

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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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Date/TimeThumbnailDimensionsUserComment
current20:57, 21 June 2024Thumbnail for version as of 20:57, 21 June 20241,158 × 1,702, 32 pages (4.18 MB)RaboKarbakian (talk | contribs){{Book |Description=Telegraph system |Source=https://patents.google.com/patent/US1108529A |Date=1914-08-25 |Author=Charles R. Underhill |Image={{pagename}} |Image page = 1 |other_versions= }} {{PD-scan|PD-US-expired}} 1924 Category:Wireless telegraphy

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