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System for determining listening habits of wave signal receiver users
US 3,058,065 A
Filed
: 11/07/1956
Issued
: 10/09/1962
Est. Priority Date
: 11/07/1956
Status: Expired due to Term
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Current Assignee
Charles H. Currey
,
Robert L Freeman
Original Assignee
Charles H. Currey
,
Robert L Freeman
Inventors
Freeman, Robert L.
,
Currey, Charles H.
Application Number
US03/620,933
Time in Patent Office
2,162 Days
Field of Search
US Class Current
455/2.01
CPC Class Codes
H04H 60/31
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