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经营范围
发明名称
Appareils sonores
摘要
申请公布号
BE497688(A1)
申请公布日期
1950.12.16
申请号
BE19500497688
申请日期
1950.08.21
申请人
VICKERS ARMSTRONGS LTD
发明人
分类号
G10K9/04
主分类号
G10K9/04
代理机构
代理人
主权项
地址
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