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发明名称
Phonograph
摘要
申请公布号
US2389327(A)
申请公布日期
1945.11.20
申请号
US19410390774
申请日期
1941.04.28
申请人
ROCK-OLA MANUFACTURING CORPORATION
发明人
ROCKOLA DAVID C.;DETTLE LAWRENCE E.;TRIMAN EUGENE L.
分类号
G07F17/30;G11B17/26
主分类号
G07F17/30
代理机构
代理人
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地址
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