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公开(公告)号：US1960611A
公开(公告)日：1934-05-29
申请号：US55015831
申请日：1931-07-11
Applicant: CLUM MFG COMPANY
Inventor： WINNING ROBERT K , EMIL SINNER
IPC: H01C10/32
CPC classification number: H01C10/32
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公开(公告)号：US1919345A
公开(公告)日：1933-07-25
申请号：US52193431
申请日：1931-03-12
Applicant: CLUM MFG COMPANY
Inventor： EMIL SINNER
IPC: H01H19/58
CPC classification number: H01H19/58
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公开(公告)号：US1875168A
公开(公告)日：1932-08-30
申请号：US28744228
申请日：1928-06-22
Applicant: CLUM MFG COMPANY
Inventor： EMIL SINNER
IPC: H01H27/06
CPC classification number: H01H27/06
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