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发明名称
Rail clamp
摘要
申请公布号
US2212293(A)
申请公布日期
1940.08.20
申请号
US19390252653
申请日期
1939.01.24
申请人
O. L. CALLAHAN
发明人
LAMB HOMER M.
分类号
E01B23/04
主分类号
E01B23/04
代理机构
代理人
主权项
地址
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