Continuous automatic water softening,申请号US19310506473-传众专利搜索

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发明名称	Continuous automatic water softening
摘要
申请公布号	US2003757(A)	申请公布日期	1935.06.04
申请号	US19310506473	申请日期	1931.01.03
申请人	THE PERMUTIT COMPANY	发明人	PICK ERIC
分类号	C02F1/42	主分类号	C02F1/42
代理机构		代理人
主权项
地址

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