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发明名称
Portable power operated hammer
摘要
申请公布号
US1809340(A)
申请公布日期
1931.06.09
申请号
US19250040964
申请日期
1925.07.01
申请人
GEORGE G. GRIFFITH;HARRY H. CANTERBURY
发明人
HILSTAD JOHN ROY
分类号
B25D11/10
主分类号
B25D11/10
代理机构
代理人
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