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发明名称
Antifriction screw
摘要
申请公布号
US2069471(A)
申请公布日期
1937.02.02
申请号
US19360086188
申请日期
1936.06.19
申请人
BAKER DONALD J
发明人
BAKER DONALD J.
分类号
F16H25/22
主分类号
F16H25/22
代理机构
代理人
主权项
地址
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