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发明名称
Drawworks brake
摘要
申请公布号
US2414677(A)
申请公布日期
1947.01.21
申请号
US19440544251
申请日期
1944.07.10
申请人
EMSCO DERRICK & EQUIPMENT COMPANY
发明人
TREMOLADA GUGLIELMO R.
分类号
F16D49/10
主分类号
F16D49/10
代理机构
代理人
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地址
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