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1.Installation for the regulation of the angular velocity of a shaft 失效
Title translation: 安装用于调节轴的角速度公开(公告)号:US1894562A
公开(公告)日:1933-01-17
申请号:US42505230
申请日:1930-01-31
Applicant: PHILIPS NV
IPC: H02P7/06
CPC classification number: H02P7/066