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1.发明授权
公开(公告)号：US2851593A
公开(公告)日：1958-09-09
申请号：US41537954
申请日：1954-03-10
Applicant: STANDARD COIL PROD CO INC
Inventor： STUART MACHLIN
CPC classification number: G05G1/10 , H03D7/18 , Y10S116/29 , Y10T74/2101 , Y10T74/2107
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公开(公告)号：US2772351A
公开(公告)日：1956-11-27
申请号：US27657352
申请日：1952-03-14
Applicant: STANDARD COIL PROD CO INC
Inventor： STUART MACHLIN
IPC: H03J5/30
CPC classification number: H03J5/30 , Y10S116/29
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