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公开(公告)号：US2848087A
公开(公告)日：1958-08-19
申请号：US51215655
申请日：1955-05-31
Applicant: CUTLER HAMMER INC
Inventor： SIMSON VERNE H , SMITH KENNETH L
IPC: G05B19/06
CPC classification number: G05B19/06 , Y10T477/3225
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