Converter method and apparatus,申请号US19570657772-传众专利搜索

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发明名称	Converter method and apparatus
摘要
申请公布号	US2959927(A)	申请公布日期	1960.11.15
申请号	US19570657772	申请日期	1957.05.08
申请人	ROBERT H. HILL;HAROLD HOFFMAN	发明人	HILL ROBERT H.
分类号	F16K11/048;F17C7/04	主分类号	F16K11/048
代理机构		代理人
主权项
地址

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