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公开(公告)号：US2852640A
公开(公告)日：1958-09-16
申请号：US53888355
申请日：1955-10-06
Applicant: CONTROLS CO OF AMERICA
Inventor： DELANCEY RALPH W
CPC classification number: H01H43/304 , F23N5/04 , G05B11/00
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