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经营范围
发明名称
Percussion device
摘要
申请公布号
US2270752(A)
申请公布日期
1942.01.20
申请号
US19390294239
申请日期
1939.09.11
申请人
COLLINS MASON
发明人
DRENNON WILLIAM M.
分类号
B25D11/10;B25D16/00
主分类号
B25D11/10
代理机构
代理人
主权项
地址
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