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公开(公告)号：US2528520A
公开(公告)日：1950-11-07
申请号：US74873047
申请日：1947-05-17
Applicant: MOTOROLA INC
Inventor： JACKSON WILBUR C , CLEMENS LOUIS T
IPC: H01H51/08
CPC classification number: H01H51/084 , Y10T74/18568
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