Automatic telephone system,申请号US19400371065-传众专利搜索

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发明名称	Automatic telephone system
摘要
申请公布号	US2322219(A)	申请公布日期	1943.06.22
申请号	US19400371065	申请日期	1940.12.21
申请人	BOSWAU HANS P	发明人	BOSWAU HANS P.
分类号	H01H67/26	主分类号	H01H67/26
代理机构		代理人
主权项
地址

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