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发明名称
Production hoist
摘要
申请公布号
US1977840(A)
申请公布日期
1934.10.23
申请号
US19330652705
申请日期
1933.01.20
申请人
OIL WELL SUPPLY COMPANY
发明人
ADAMS JAMES W.
分类号
B66D5/00
主分类号
B66D5/00
代理机构
代理人
主权项
地址
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