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发明名称
Umspulvorrichtung für den Sprechdraht bzw. das Sprechband von Stahldrahtphonographen.
摘要
申请公布号
AT123540(B)
申请公布日期
1931.06.25
申请号
ATD123540
申请日期
1929.11.16
申请人
SIEMENS & HALSKE AKTIENGESELLSCHAFT
发明人
ERWIN GERLACH
分类号
主分类号
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代理人
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