Appareil effondreur des bois de soutènement utilisés dans les mines,申请号FRD777866-传众专利搜索

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发明名称	Appareil effondreur des bois de soutènement utilisés dans les mines
摘要
申请公布号	FR777866(A)	申请公布日期	1935.03.02
申请号	FRD777866	申请日期	1934.08.31
申请人	LE TUBE FACONNE	发明人
分类号	E21D15/60	主分类号	E21D15/60
代理机构		代理人
主权项
地址

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