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经营范围
发明名称
DRILLING MUD DISPERSION
摘要
申请公布号
CA416998(A)
申请公布日期
1943.12.14
申请号
CAD416998
申请日期
申请人
AMERICAN CYANAMID COMPANY
发明人
ROBERT B. BOOTH
分类号
主分类号
代理机构
代理人
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