Party line station identifying impulse transmitter,申请号US19560631752-传众专利搜索

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发明名称	Party line station identifying impulse transmitter
摘要
申请公布号	US2846512(A)	申请公布日期	1958.08.05
申请号	US19560631752	申请日期	1956.12.31
申请人	BELL TELEPHONE LABORATORIES, INCORPORATED	发明人	JR. GEORGE B. CROFUTT,;FISK JAMES B.
分类号	H04M1/54;H04Q5/00	主分类号	H04M1/54
代理机构		代理人
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