Gain control system for seismic amplifiers,申请号US19480056456-传众专利搜索

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发明名称	Gain control system for seismic amplifiers
摘要
申请公布号	US2656422(A)	申请公布日期	1953.10.20
申请号	US19480056456	申请日期	1948.10.25
申请人	SOCONY-VACUUM OIL COMPANY, INCORPORATED	发明人	LOPER GEORGE B.
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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