Perfectionnements aux dispositifs pour la prise de carottes dans les parois et en particulier dans la paroi latérale des sondages,申请号FRD856567-传众专利搜索

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发明名称	Perfectionnements aux dispositifs pour la prise de carottes dans les parois et en particulier dans la paroi latérale des sondages
摘要
申请公布号	FR856567(A)	申请公布日期	1940.06.18
申请号	FRD856567	申请日期	1939.03.07
申请人	SOCIETE DE PROSPECTION ELECTRIQUE	发明人
分类号	E21B49/04	主分类号	E21B49/04
代理机构		代理人
主权项
地址

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