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公开(公告)号：US1190190A
公开(公告)日：1916-07-04
申请号：US1914824908
申请日：1914-03-16
Applicant: SECURITY TRUST COMPANY , P R MFG COMPANY
Inventor： PROCTOR CHARLES M
CPC classification number: H01H1/0201
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公开(公告)号：US835199A
公开(公告)日：1906-11-06
申请号：US1905293292
申请日：1905-12-26
Applicant: P R MFG COMPANY
Inventor： PROCTOR CHARLES M
CPC classification number: G10K1/062
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