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经营范围
发明名称
Rosin refining
摘要
申请公布号
US2324223(A)
申请公布日期
1943.07.13
申请号
US19400364795
申请日期
1940.11.08
申请人
HERCULES POWDER COMPANY
发明人
MARTIN ROBERT W.
分类号
C09F1/00
主分类号
C09F1/00
代理机构
代理人
主权项
地址
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