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经营范围
发明名称
Einrichtung zum Entgasen von Schlamm, z. B. bei Ölbohrbrunnen
摘要
申请公布号
CH345857(A)
申请公布日期
1960.04.30
申请号
CHD345857
申请日期
1956.10.18
申请人
SALT WATER CONTROL, INC.
发明人
W. ERWIN,RANSOME
分类号
E21B21/06
主分类号
E21B21/06
代理机构
代理人
主权项
地址
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