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1.发明授权Device for changing the spring force acting on a rotatable system in a gauge or the like 失效用于改变作用在量规等中的可旋转系统上的弹簧力的装置
公开(公告)号：US3134586A
公开(公告)日：1964-05-26
申请号：US16560862
申请日：1962-01-11
Applicant: REGULATOR AG
Inventor： JOSEPH THOMAS OTTO ERICH
CPC classification number: G05D23/125 , G01L1/048 , G05G25/00 , G05G2700/14
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