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DIRECT STATION SELECTION TELEPHONE SET EMPLOYING PROXIMITY TYPE SELECTOR SWITCHES
US 3,492,440 A
Filed
: 05/25/1967
Issued
: 01/27/1970
Est. Priority Date
: 05/25/1967
Status: Expired due to Term
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Current Assignee
John W. Rieke
,
Michael A. Flavin
,
Norris R. Hall
,
Ralph L. Cerbone
Original Assignee
John W. Rieke
,
Michael A. Flavin
,
Norris R. Hall
,
Ralph L. Cerbone
Inventors
Cerbone, Ralph L.
,
Flavin, Michael A.
,
Hall, Norris R.
,
Rieke, John W.
Application Number
US04/641,191
Time in Patent Office
978 Days
Field of Search
US Class Current
379/356.01
CPC Class Codes
H03K 2217/96077
comprising an electrode whi...
H04M 1/23
Construction or mounting of...
H04M 1/27495
implemented by means of dis...
H04Q 3/00
Selecting arrangements H04Q...
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