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发明名称
PUMPING SYSTEM FOR HEATED OIL WELLS
摘要
申请公布号
CA770978(A)
申请公布日期
1967.11.07
申请号
CAD770978
申请日期
申请人
VERNON D. BEEHLER;GEORGE VON GEHR;RUSSELL R. WATERMAN
发明人
RUSSELL R. WATERMAN
分类号
主分类号
代理机构
代理人
主权项
地址
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