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发明名称
Mechanical hammer
摘要
申请公布号
US2401794(A)
申请公布日期
1946.06.11
申请号
US19430507112
申请日期
1943.10.21
申请人
PRATT LAWRENCE E
发明人
PRATT LAWRENCE E.
分类号
B25D11/10
主分类号
B25D11/10
代理机构
代理人
主权项
地址
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