Water softening apparatus,申请号US19290396504-传众专利搜索

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发明名称	Water softening apparatus
摘要
申请公布号	US1942807(A)	申请公布日期	1934.01.09
申请号	US19290396504	申请日期	1929.10.01
申请人	AUTOMATIC WATER SOFTENER COMPANY	发明人	DOTTERWEICH ANDREW J.
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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