Improvements in two-stage screw impeller fans,申请号GB19380019515-传众专利搜索

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发明名称	Improvements in two-stage screw impeller fans
摘要
申请公布号	GB492645(A)	申请公布日期	1938.09.23
申请号	GB19380019515	申请日期	1938.07.01
申请人	AEREX LIMITED;JENS ORTEN BOVING	发明人
分类号	F04D29/26	主分类号	F04D29/26
代理机构		代理人
主权项
地址

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