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发明名称
Improvements in or relating to the manufacture of gramophone recording blanks
摘要
申请公布号
GB774526(A)
申请公布日期
1957.05.08
申请号
GB19540005231
申请日期
1954.02.23
申请人
ELECTRIC AND MUSICAL INDUSTRIES LIMITED
发明人
RAND WALTER LESLIE
分类号
B29D17/00
主分类号
B29D17/00
代理机构
代理人
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