Weight dropping apparatus for generating a seismic impulse useful in geological exploation,申请号US19660569966-传众专利搜索

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发明名称	Weight dropping apparatus for generating a seismic impulse useful in geological exploation
摘要
申请公布号	US3393763(A)	申请公布日期	1968.07.23
申请号	US19660569966	申请日期	1966.08.03
申请人	MANDREL INDUSTRIES, INC.	发明人	SUNDT PETER C.
分类号	G01V1/147	主分类号	G01V1/147
代理机构		代理人
主权项
地址

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