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发明名称
Change-cycle initiating mechanism for automatic phonographs
摘要
申请公布号
US2668058(A)
申请公布日期
1954.02.02
申请号
US19500188677
申请日期
1950.10.06
申请人
ZENITH RADIO CORPORATION
发明人
MULLANEY RALPH A.
分类号
G11B17/02
主分类号
G11B17/02
代理机构
代理人
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地址
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