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发明名称
Single boom derrick units
摘要
申请公布号
US3273466(A)
申请公布日期
1966.09.20
申请号
US19640383043
申请日期
1964.07.16
申请人
MCCABE-POWERS BODY COMPANY
发明人
BALOGH ROY O.;BAKULA ROBERT G.
分类号
B66C13/18
主分类号
B66C13/18
代理机构
代理人
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地址
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