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经营范围
发明名称
WELL HEATER
摘要
申请公布号
CA586030(A)
申请公布日期
1959.10.27
申请号
CAD586030
申请日期
申请人
UNION OIL COMPANY OF CALIFORNIA
发明人
CLAYTON A. CARPENTER
分类号
主分类号
代理机构
代理人
主权项
地址
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