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发明名称
Two crystal microphone assembly for well sounding
摘要
申请公布号
US3275096(A)
申请公布日期
1966.09.27
申请号
US19630272508
申请日期
1963.04.10
申请人
TEXACO INC.
发明人
LORD ARTHUR H.
分类号
B06B1/06;E21B47/04;G01F23/296;G01S13/08;G01S13/88;G01V1/52
主分类号
B06B1/06
代理机构
代理人
主权项
地址
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