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Remote listening and control system
US 3,042,750 A
Filed
: 09/29/1958
Issued
: 07/03/1962
Est. Priority Date
: 11/27/1957
Status: Expired due to Term
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Current Assignee
Jan Siezen Gerrit
Original Assignee
Jan Siezen Gerrit
Inventors
JAN SIEZEN GERRIT
Application Number
US03/764,185
Time in Patent Office
1,373 Days
Field of Search
US Class Current
340/12.54
CPC Class Codes
H04B 5/00
Near-field transmission sys...
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