Improvements in or relating to ear protection,申请号GB19580008810-传众专利搜索

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发明名称	Improvements in or relating to ear protection
摘要
申请公布号	GB832311(A)	申请公布日期	1960.04.06
申请号	GB19580008810	申请日期	1958.03.19
申请人	MIDLAND SILICONES LIMITED	发明人
分类号	A61F11/08;H04R25/00	主分类号	A61F11/08
代理机构		代理人
主权项
地址

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