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发明名称
Clutch
摘要
申请公布号
US1921315(A)
申请公布日期
1933.08.08
申请号
US19310564099
申请日期
1931.09.21
申请人
ROCKFORD DRILLING MACHINE CO.
发明人
HUGHES WILLIAM F.
分类号
F16D13/70
主分类号
F16D13/70
代理机构
代理人
主权项
地址
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