Perfectionnements aux valves de sureté pour le coulissement des étanÇons hydrauliques assurant le soutenement dans les mines.,申请号FR19676949269-传众专利搜索

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发明名称	Perfectionnements aux valves de sureté pour le coulissement des étanÇons hydrauliques assurant le soutenement dans les mines.
摘要
申请公布号	FR93141(E)	申请公布日期	1969.02.14
申请号	FR19676949269	申请日期	1967.10.30
申请人	BENNES MARREL	发明人
分类号	E21D15/51;F16K15/14;F16K17/04;(IPC1-7):F15C/;E21D/	主分类号	E21D15/51
代理机构		代理人
主权项
地址

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