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Title:
Wireless secret telephony
United States Patent 1607485


Inventors:
Hans, Schmidt
Application Number:
US69026124A
Publication Date:
11/16/1926
Filing Date:
02/02/1924
Export Citation:
Click for automatic bibliography generation
Assignee:
Hans, Schmidt
Primary Class:
380/32
Other Classes:
334/83
International Classes:
H04K1/00
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