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发明名称
Sprechmaschine zum ununterbrochenen Abspielen mehrerer Schallplatten
摘要
申请公布号
DE523840(C)
申请公布日期
1931.04.29
申请号
DE1929P061697D
申请日期
1929.11.20
申请人
POLYPHONWERKE AKT.-GES.
发明人
分类号
G11B17/00
主分类号
G11B17/00
代理机构
代理人
主权项
地址
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