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经营范围
发明名称
Treating apparatus for coal and like material
摘要
申请公布号
US2229725(A)
申请公布日期
1941.01.28
申请号
US19380196717
申请日期
1938.03.18
申请人
CHEASLEY THOMAS C
发明人
CHEASLEY THOMAS C.
分类号
E21F5/02
主分类号
E21F5/02
代理机构
代理人
主权项
地址
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