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发明名称
Förfaringssätt och anordning för uppteckning av ljud
摘要
申请公布号
FI21010(A)
申请公布日期
1946.01.10
申请号
FID21010
申请日期
1938.07.22
申请人
AGA-BALTIC AB
发明人
SCHLEGEL KARL HERMAN FRANZ
分类号
G03B31/02;(IPC1-7):G03B31/02
主分类号
G03B31/02
代理机构
代理人
主权项
地址
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