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发明名称
Coal cleaner
摘要
申请公布号
US1792440(A)
申请公布日期
1931.02.10
申请号
US19290376897
申请日期
1929.07.09
申请人
OPPY ALWYN G;SADLER GRANGER B
发明人
OPPY ALWYN G.;SADLER GRANGER B.
分类号
B03B4/04
主分类号
B03B4/04
代理机构
代理人
主权项
地址
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