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公开(公告)号:US2617045A
公开(公告)日:1952-11-04
申请号:US6993749
申请日:1949-01-08
Applicant: PHILIPS LAB INC
Inventor: COE MYRON R
IPC: G05F1/52 , H05G1/34
CPC classification number: G05F1/52 , H05G1/34