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发明名称
Classifier for dry impalpable fines
摘要
申请公布号
US2113885(A)
申请公布日期
1938.04.12
申请号
US19360117640
申请日期
1936.12.24
申请人
WILLIAM G. BROADFOOT
发明人
GERHARDT PAUL
分类号
B07B7/08
主分类号
B07B7/08
代理机构
代理人
主权项
地址
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