Manufacture of evacuated metal envelopes,申请号US19370176813-传众专利搜索

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发明名称	Manufacture of evacuated metal envelopes
摘要
申请公布号	US2141644(A)	申请公布日期	1938.12.27
申请号	US19370176813	申请日期	1937.11.27
申请人	RADIO CORPORATION	发明人	EDDISON CLIFFORD
分类号	H01J9/38	主分类号	H01J9/38
代理机构		代理人
主权项
地址

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