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发明名称
Verfahren zur Schallaufzeichnung
摘要
申请公布号
DE530085(C)
申请公布日期
1931.07.21
申请号
DE1929P061638D
申请日期
1929.11.09
申请人
ARCHIBALD FULTON POLLOCK;DAVID ALEXANDER POLLOCK;EDWIN KING SCHEFTEL
发明人
分类号
G11B9/00
主分类号
G11B9/00
代理机构
代理人
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地址
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