Coherer_Rcvr.jpg
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Summary
Description Coherer Rcvr.jpg |
Deutsch:
Fritter
|
Date | |
Source | "Elements of Radiotelegraphy", published in USA 1922 First upload: en:Image:Coherer Rcvr.jpg |
Author | Unknown author Unknown author |
Licensing
Public domain Public domain false false |
The text and illustrations of US patents published before March 1, 1989 are in the public domain unless the patent text contains a specific notice that portions are copyrighted. See
37 CFR 1.71(d)
,
37 CFR 1.84(s)
The original patent contains no such notice, so its contents are in the public domain. Note: This only applies to images published before March 1, 1989. Patents published after that date are most likely copyrighted, unless in the public domain for another reason, such as {{PD-ineligible}} . |
Original upload log
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- 2008-10-30 19:15:03 Biezl (47206 Bytes) {{Information |Beschreibung = [[Fritter]] |Quelle = [[:en:Image:Coherer Rcvr.jpg]] |Urheber = unknown |Datum = 1923 |Genehmigung = |Andere Versionen = |Anmerkungen = }} {{Schöpfungshöhe}}