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发明名称
Photoelectric control of variablespeed mechanism
摘要
申请公布号
US2166551(A)
申请公布日期
1939.07.18
申请号
US19370138344
申请日期
1937.04.22
申请人
REEVES PULLEY COMPANY
发明人
PERRY WILLIAM R.
分类号
G05D7/06
主分类号
G05D7/06
代理机构
代理人
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