Doppelt wirkende Vakuumpumpe,申请号DE1926B127673D-传众专利搜索

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发明名称	Doppelt wirkende Vakuumpumpe
摘要
申请公布号	DE509835(C)	申请公布日期	1930.10.13
申请号	DE1926B127673D	申请日期	1926.10.07
申请人	SPERLING & CO. KOMM.-GES.	发明人
分类号	F01L21/04;F04B5/02;F04B7/00;F04B37/14;F04B39/00;F04B39/08	主分类号	F01L21/04
代理机构		代理人
主权项
地址

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