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发明名称
Grammophonplatte.
摘要
申请公布号
CH150974(A)
申请公布日期
1931.11.30
申请号
CHD150974
申请日期
1930.12.05
申请人
SPIRA,LEOPOLD
发明人
SPIRA,LEOPOLD
分类号
G11B3/70
主分类号
G11B3/70
代理机构
代理人
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