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发明名称
Scraper for carbon black drum
摘要
申请公布号
US2256949(A)
申请公布日期
1941.09.23
申请号
US19390284552
申请日期
1939.07.14
申请人
CONTINENTAL CARBON COMPANY
发明人
MCKINNEY CHARLES E.
分类号
C09C1/60
主分类号
C09C1/60
代理机构
代理人
主权项
地址
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