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发明名称
Hammer
摘要
申请公布号
US2198764(A)
申请公布日期
1940.04.30
申请号
US19380204436
申请日期
1938.04.26
申请人
EDWARDS BLUFORD E
发明人
EDWARDS BLUFORD E.
分类号
B25D1/02;B25D1/12
主分类号
B25D1/02
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代理人
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