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发明名称
Call letter keyer
摘要
申请公布号
US3007001(A)
申请公布日期
1961.10.31
申请号
US19580776596
申请日期
1958.11.26
申请人
ACF INDUSTRIES, INCORPORATED
发明人
SCHIERHORST ALBERT E.
分类号
H04L15/22
主分类号
H04L15/22
代理机构
代理人
主权项
地址
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