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发明名称
Magnetic stylus guide
摘要
申请公布号
US2766097(A)
申请公布日期
1956.10.09
申请号
US19530357731
申请日期
1953.05.27
申请人
THE WESTERN UNION TELEGRAPH COMPANY
发明人
ZABRISKIE DOUGLAS M.
分类号
H04N1/032;H04N1/14
主分类号
H04N1/032
代理机构
代理人
主权项
地址
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