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经营范围
发明名称
Blasting apparatus
摘要
申请公布号
US1881564(A)
申请公布日期
1932.10.11
申请号
US19310551084
申请日期
1931.07.16
申请人
HELMHOLTZ ARTHUR W;DENT FERRELL
发明人
HELMHOLTZ ARTHUR W.;FERRELL DENT
分类号
F42B3/06
主分类号
F42B3/06
代理机构
代理人
主权项
地址
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