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发明名称
Stemming wad for blastholes
摘要
申请公布号
US2341944(A)
申请公布日期
1944.02.15
申请号
US19400322315
申请日期
1940.03.05
申请人
CALIFORNIA COTTON MILLS COMPANY
发明人
OLSEN BURTON A.
分类号
F42D1/18
主分类号
F42D1/18
代理机构
代理人
主权项
地址
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