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经营范围
发明名称
Ball and scoket joint construction
摘要
申请公布号
US2687024(A)
申请公布日期
1954.08.24
申请号
US19500196828
申请日期
1950.11.21
申请人
FOOD MACHINERY AND CHEMICAL CORPORATION
发明人
GEORGE OTIS R.
分类号
E21B17/04;F16C11/06;F16D3/207
主分类号
E21B17/04
代理机构
代理人
主权项
地址
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