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发明名称
Dispersed pigment from organic carbonaceous earth and process for producing the same
摘要
申请公布号
US1949147(A)
申请公布日期
1934.02.27
申请号
US19310555143
申请日期
1931.08.04
申请人
DOVE LEONARD P
发明人
DOVE LEONARD P.
分类号
C09C1/44
主分类号
C09C1/44
代理机构
代理人
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地址
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