Appareil gravillonneur perfectionné,申请号FRD840082-传众专利搜索

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发明名称	Appareil gravillonneur perfectionné
摘要
申请公布号	FR840082(A)	申请公布日期	1939.04.18
申请号	FRD840082	申请日期	1937.12.24
申请人	ANCIENS ETABLISSEMENTS PIQUARD FRERES	发明人	HENRI RIEUX, CAMILLE, GABRIEL,
分类号	E01C19/20	主分类号	E01C19/20
代理机构		代理人
主权项
地址

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