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发明名称
Phase selective signal transmission system
摘要
申请公布号
US2483718(A)
申请公布日期
1949.10.04
申请号
US19460651013
申请日期
1946.02.28
申请人
SCHLUMBERGER WELL SURVEYING CORPORATION
发明人
AIKEN CHARLES B.
分类号
G01V3/34;H04L5/12
主分类号
G01V3/34
代理机构
代理人
主权项
地址
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