Improvements in or relating to the manufacture of sound records of disc form, such as those used on gramophones,申请号GB19300005724-传众专利搜索

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发明名称	Improvements in or relating to the manufacture of sound records of disc form, such as those used on gramophones
摘要
申请公布号	GB347364(A)	申请公布日期	1931.04.30
申请号	GB19300005724	申请日期	1930.02.20
申请人	JOHN RICHARDSON CRAIG	发明人
分类号	B29C43/02	主分类号	B29C43/02
代理机构		代理人
主权项
地址

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