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发明名称
Pipe-suspension device
摘要
申请公布号
US1795713(A)
申请公布日期
1931.03.10
申请号
US19260147251
申请日期
1926.11.09
申请人
WILLIAM A. TROUT;CHARLES R. BUTLER;CHESTER A. RASMUSSEN
发明人
DEAN CHARLES L.;LOCKWOOD FRANK A.;RICHIE GEORGE B.
分类号
E21B33/04
主分类号
E21B33/04
代理机构
代理人
主权项
地址
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