Temperature control apparatus,申请号US19280245063-传众专利搜索

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发明名称	Temperature control apparatus
摘要
申请公布号	US1939073(A)	申请公布日期	1933.12.12
申请号	US19280245063	申请日期	1928.01.07
申请人	BELL TELEPHONE LABORATORIES, INCORPORATED	发明人	MALLES RALPH E.
分类号	G05D23/275	主分类号	G05D23/275
代理机构		代理人
主权项
地址

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