An improved hygienic cover for the mouth pieces of telephones and the like,申请号GB19300028332-传众专利搜索

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发明名称	An improved hygienic cover for the mouth pieces of telephones and the like
摘要
申请公布号	GB363013(A)	申请公布日期	1931.12.17
申请号	GB19300028332	申请日期	1930.09.22
申请人	ETHEL MARY BROWN;STEPHANOS CONSTANDUROS	发明人
分类号	H04R1/12	主分类号	H04R1/12
代理机构		代理人
主权项
地址

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