Pompe à vide,申请号FRD687487-传众专利搜索

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发明名称	Pompe à vide
摘要
申请公布号	FR687487(A)	申请公布日期	1930.08.08
申请号	FRD687487	申请日期	1929.03.19
申请人		发明人	PICTET RAOUL;SARRAZIN JOSEPH;SAUGEY ALBERT
分类号	F04B5/02;F04B39/08;F04B39/12;F04B49/24	主分类号	F04B5/02
代理机构		代理人
主权项
地址

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