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公开(公告)号：US2773987A
公开(公告)日：1956-12-11
申请号：US32551552
申请日：1952-12-12
Applicant: STANDARD COIL PROD CO INC
Inventor： ERICH FEIGL
IPC: H03J5/02
CPC classification number: H03J5/02
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公开(公告)号：US2773986A
公开(公告)日：1956-12-11
申请号：US32551452
申请日：1952-12-12
Applicant: STANDARD COIL PROD CO INC
Inventor： PAUL THIAS EDWIN , ERICH FEIGL
IPC: H03J5/02
CPC classification number: H03J5/02
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