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发明名称
Work driver unit
摘要
申请公布号
US2493995(A)
申请公布日期
1950.01.10
申请号
US19450600389
申请日期
1945.06.19
申请人
STERLING NOWKA
发明人
NOWKA STERLING
分类号
B23B31/12
主分类号
B23B31/12
代理机构
代理人
主权项
地址
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