System of screen grid modulation,申请号US19310549603-传众专利搜索

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发明名称	System of screen grid modulation
摘要
申请公布号	US2043255(A)	申请公布日期	1936.06.09
申请号	US19310549603	申请日期	1931.07.09
申请人	MARKS JR WILLIAM S	发明人	JR. WILLIAM S. MARKS,
分类号	H03C1/24	主分类号	H03C1/24
代理机构		代理人
主权项
地址

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