Telephone ringing generator,申请号US19550496674-传众专利搜索

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发明名称	Telephone ringing generator
摘要
申请公布号	US2850655(A)	申请公布日期	1958.09.02
申请号	US19550496674	申请日期	1955.03.25
申请人	INTERNATIONAL TELEPHONE AND TELEGRAPH CORPORATION	发明人	FROM OWEN C.;HAIGH LESLIE B.;GULNICK ADRION N.
分类号	H02K21/12	主分类号	H02K21/12
代理机构		代理人
主权项
地址

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