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经营范围
发明名称
Improvements in or relating to means for producing mechanical vibrations
摘要
申请公布号
GB633077(A)
申请公布日期
1949.12.12
申请号
GB19460031195
申请日期
1946.10.21
申请人
SUBMARINE SIGNAL COMPANY
发明人
分类号
G10K13/00
主分类号
G10K13/00
代理机构
代理人
主权项
地址
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