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发明名称
Disk for phonographic recording
摘要
申请公布号
US2012134(A)
申请公布日期
1935.08.20
申请号
US19330686202
申请日期
1933.08.22
申请人
HISAJI KUBO
发明人
KUBO HISAJI
分类号
G11B3/70
主分类号
G11B3/70
代理机构
代理人
主权项
地址
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