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发明名称
Automatic chucking device
摘要
申请公布号
US2201287(A)
申请公布日期
1940.05.21
申请号
US19370151298
申请日期
1937.06.30
申请人
THOMPSON PRODUCTS, INC.
发明人
COX JOHN R.
分类号
B23B31/20
主分类号
B23B31/20
代理机构
代理人
主权项
地址
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