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发明名称
Antifriction screw device
摘要
申请公布号
US2508261(A)
申请公布日期
1950.05.16
申请号
US19480037359
申请日期
1948.07.07
申请人
HOSLER DONALD W
发明人
HOSLER DONALD W.
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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