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发明名称
PHONOGRAPH PICK-UP
摘要
申请公布号
CA465690(A)
申请公布日期
1950.06.06
申请号
CAD465690
申请日期
申请人
FARNSWORTH TELEVISION AND RADIO CORPORATION
发明人
MADISON CAWEIN;WALTER L. ECKHARDT
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主分类号
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