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发明名称
Phonograph
摘要
申请公布号
US2611619(A)
申请公布日期
1952.09.23
申请号
US19480027297
申请日期
1948.05.15
申请人
ROCK-OLA MANUFACTURING CORPORATION
发明人
CAMBRON JOHN R.;ROCKOLA DAVID C.
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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