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发明名称
Trail builder
摘要
申请公布号
US2173158(A)
申请公布日期
1939.09.19
申请号
US19360089171
申请日期
1936.07.06
申请人
EMSCO DERRICK & EQUIPMENT COMPANY
发明人
CORBETT JOHN M.
分类号
E02F3/76
主分类号
E02F3/76
代理机构
代理人
主权项
地址
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