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Automatic line testing and switching circuit
US 2,680,162 A
Filed
: 02/06/1953
Issued
: 06/01/1954
Est. Priority Date
: 02/06/1953
Status: Expired due to Term
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Current Assignee
Aubrey A. Smith
,
Harold B. Brehm
,
Ira G. Wilson
,
John P. Kinzer
Original Assignee
Aubrey A. Smith
,
Harold B. Brehm
,
Ira G. Wilson
,
John P. Kinzer
Inventors
Brehm, Harold B.
,
Kinzer, John P.
,
Smith, Aubrey A.
,
Wilson, Ira G.
Application Number
US03/335,514
Time in Patent Office
480 Days
Field of Search
US Class Current
455/9
CPC Class Codes
H04B 1/74
for increasing reliability,...
H04J 1/10
Intermediate station arrang...
H04J 1/16
Monitoring arrangements for...
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