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发明名称
Phonograph pickup
摘要
申请公布号
GB603908(A)
申请公布日期
1948.06.24
申请号
GB19450029329
申请日期
1945.11.05
申请人
FARNSWORTH TELEVISION & RADIO CORPORATION
发明人
分类号
H04R21/04
主分类号
H04R21/04
代理机构
代理人
主权项
地址
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