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发明名称
Variable electric condenser assembly with multiple units for key-board operation
摘要
申请公布号
GB495767(A)
申请公布日期
1938.11.14
申请号
GB19370013587
申请日期
1937.05.13
申请人
ROBERT KAPP
发明人
分类号
H03J5/32
主分类号
H03J5/32
代理机构
代理人
主权项
地址
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