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经营范围
发明名称
Signal generator
摘要
申请公布号
US2981358(A)
申请公布日期
1961.04.25
申请号
US19550547189
申请日期
1955.11.16
申请人
PHILLIPS PETROLEUM COMPANY
发明人
PIETY RAYMOND G.;JR. ROSS S. MARSDEN,
分类号
G01V1/24
主分类号
G01V1/24
代理机构
代理人
主权项
地址
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