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经营范围
发明名称
Hydraulic derrick
摘要
申请公布号
US3015374(A)
申请公布日期
1962.01.02
申请号
US19560582730
申请日期
1956.05.04
申请人
TEL-E-LECT PRODUCTS INC.
发明人
CARBERT RALPH E.;BLOMQUIST ARNE M.;KENNEDY RAYMOND L.
分类号
B66C13/18;E21B19/087
主分类号
B66C13/18
代理机构
代理人
主权项
地址
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