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发明名称
Fremgangsmaade til Fremstilling af Membraner, især til akustiske Formaal, og Anordninger ved saadanne Membraner.
摘要
申请公布号
DK43677(C)
申请公布日期
1931.02.02
申请号
DKD43677
申请日期
1929.04.02
申请人
DET TEKNISKE FORSOEGSAKTIESELSKAB
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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