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Apparatus for determining listening habits of radio receiver users
US 2,552,585 A
Filed
: 01/09/1947
Issued
: 05/15/1951
Est. Priority Date
: 01/09/1947
Status: Expired due to Term
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Current Assignee
Henry A. Rahmel
Original Assignee
Henry A. Rahmel
Inventors
Rahmel, Henry A.
Application Number
US02/721,049
Time in Patent Office
1,587 Days
Field of Search
US Class Current
455/2.01
CPC Class Codes
H04H 60/43
for identifying broadcast c...
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