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发明名称
Method of refining rosin
摘要
申请公布号
US1897379(A)
申请公布日期
1933.02.14
申请号
US19280299128
申请日期
1928.08.11
申请人
HERCULES POWDER COMPANY
发明人
HUMPHREY IRVIN W.
分类号
C09F1/00
主分类号
C09F1/00
代理机构
代理人
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地址
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