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经营范围
发明名称
Improvements in and relating to gramophone apparatus
摘要
申请公布号
GB646270(A)
申请公布日期
1950.11.15
申请号
GB19480025478
申请日期
1948.09.30
申请人
JOSEPH DIAMOND;SIDNEY WILLIAM WALKER;GEORGE EAST;THOMPSON DIAMOND AND BUTCHER LIMITED
发明人
分类号
G11B33/02
主分类号
G11B33/02
代理机构
代理人
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地址
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