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发明名称
Power hammer
摘要
申请公布号
US1887980(A)
申请公布日期
1932.11.15
申请号
US19300471873
申请日期
1930.07.30
申请人
HORACE BYFORD
发明人
MARTIN ROBERT P.
分类号
B25D11/06;B25D15/02
主分类号
B25D11/06
代理机构
代理人
主权项
地址
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