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经营范围
发明名称
Process of refining wood rosin
摘要
申请公布号
US1973172(A)
申请公布日期
1934.09.11
申请号
US19300485825
申请日期
1930.10.01
申请人
NEWPORT INDUSTRIES, INC.
发明人
LEE HENRY R.
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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