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发明名称
Method and apparatus for heading screw blanks or the like
摘要
申请公布号
US2202324(A)
申请公布日期
1940.05.28
申请号
US19380248107
申请日期
1938.12.28
申请人
AMERICAN SCREW COMPANY
发明人
TOMALIS JOSEPH J.
分类号
B21K1/44
主分类号
B21K1/44
代理机构
代理人
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地址
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