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发明名称
SIGNALLING SYSTEM FOR WELLS
摘要
申请公布号
CA432315(A)
申请公布日期
1946.01.01
申请号
CAD432315
申请日期
申请人
STANOLIND OIL AND GAS COMPANY
发明人
ROBERT E. FEARON;DANIEL SILVERMAN
分类号
G01V3/34
主分类号
G01V3/34
代理机构
代理人
主权项
地址
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