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经营范围
发明名称
Lifting rig
摘要
申请公布号
US2547502(A)
申请公布日期
1951.04.03
申请号
US19450610148
申请日期
1945.08.10
申请人
SMITH
发明人
CHRISTIANSON CARL R.;STEARN RICHARD A.;HUNT HOWARD H.;SMITH ALVA
分类号
B66C1/66
主分类号
B66C1/66
代理机构
代理人
主权项
地址
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