Apparatus for placing seismic explosive charges,申请号US19530389106-传众专利搜索

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发明名称	Apparatus for placing seismic explosive charges
摘要
申请公布号	US2773669(A)	申请公布日期	1956.12.11
申请号	US19530389106	申请日期	1953.10.29
申请人	NORMAN JR JOE;HAMIL A B	发明人	JR. JOE NORMAN,;HAMIL A. B.
分类号	E21B7/00;F42D1/08	主分类号	E21B7/00
代理机构		代理人
主权项
地址

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