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发明名称
Apparatus for dedusting and cleaning coal and the like
摘要
申请公布号
US2291661(A)
申请公布日期
1942.08.04
申请号
US19390270391
申请日期
1939.04.27
申请人
ROBERTS AND SCHAEFER COMPANY
发明人
STUMP EARL
分类号
B03B4/00
主分类号
B03B4/00
代理机构
代理人
主权项
地址
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