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发明名称
Protective disc for phonograph records
摘要
申请公布号
US2906536(A)
申请公布日期
1959.09.29
申请号
US19550485430
申请日期
1955.02.01
申请人
MAUERHOFF GAIR H
发明人
MAUERHOFF GAIR H.
分类号
G11B17/16
主分类号
G11B17/16
代理机构
代理人
主权项
地址
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