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发明名称
Drive for talking machines
摘要
申请公布号
US1777973(A)
申请公布日期
1930.10.07
申请号
US19290392711
申请日期
1929.09.14
申请人
CHARLES JAFFARD LOUIS LAURENT
发明人
JAFFARD LOUIS LAURENT CHARLES
分类号
G11B19/265
主分类号
G11B19/265
代理机构
代理人
主权项
地址
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