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经营范围
发明名称
Dust collector
摘要
申请公布号
US2792199(A)
申请公布日期
1957.05.14
申请号
US19550552864
申请日期
1955.12.13
申请人
MINE SAFETY APPLIANCES COMPANY
发明人
BECKER EARL M.;BROCHETTI RAYMOND E.
分类号
B23Q11/00;E21B21/015
主分类号
B23Q11/00
代理机构
代理人
主权项
地址
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