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发明名称
Antifriction pipe guide
摘要
申请公布号
US2174193(A)
申请公布日期
1939.09.26
申请号
US19370165646
申请日期
1937.09.25
申请人
MICKELSON ALFRED O;DUAEI ALEXANDER J
发明人
MICKELSON ALFRED O.;DUAEI ALEXANDER J.
分类号
B65H57/14;F16L3/18
主分类号
B65H57/14
代理机构
代理人
主权项
地址
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