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发明名称
Two-speed friction drive transmission for phonograph turntables
摘要
申请公布号
US2700309(A)
申请公布日期
1955.01.25
申请号
US19480061534
申请日期
1948.11.23
申请人
THE GENERAL INDUSTRIES COMPANY
发明人
HARTMAN HERBERT L.
分类号
G11B19/265
主分类号
G11B19/265
代理机构
代理人
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地址
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