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经营范围
发明名称
Rosin modified phenol formaldehyde resins of enlarged molecular size
摘要
申请公布号
US2478490(A)
申请公布日期
1949.08.09
申请号
US19460690082
申请日期
1946.08.12
申请人
WILLIAM KRUMBHAAR
发明人
KRUMBHAAR WILLIAM
分类号
C08G8/34
主分类号
C08G8/34
代理机构
代理人
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地址
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