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TWO-STAGE LINK CONNECTION SYSTEM USING CROSS-BAR SWITCHES
US 3,539,730 A
Filed
: 12/14/1967
Issued
: 11/10/1970
Est. Priority Date
: 12/17/1966
Status: Expired due to Term
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Current Assignee
Imamura Akira
Original Assignee
Imamura Akira
Inventors
IMAMURA AKIRA
Application Number
US04/690,472
Time in Patent Office
1,062 Days
Field of Search
US Class Current
379/271
CPC Class Codes
H04Q 3/0004
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