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公开(公告)号：US2222963A
公开(公告)日：1940-11-26
申请号：US22491638
申请日：1938-08-15
Applicant: CLUM MFG COMPANY
Inventor： TREGONING WILLIAM C
IPC: H01H13/26
CPC classification number: H01H13/26 , Y10T74/18904
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