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经营范围
发明名称
Mining cartridge
摘要
申请公布号
US1915687(A)
申请公布日期
1933.06.27
申请号
US19310550375
申请日期
1931.07.13
申请人
MEYER RALPH J
发明人
MEYER RALPH J.
分类号
F42D1/08
主分类号
F42D1/08
代理机构
代理人
主权项
地址
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