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发明名称
Key sender
摘要
申请公布号
US2930854(A)
申请公布日期
1960.03.29
申请号
US19570704486
申请日期
1957.12.23
申请人
GENERAL DYNAMICS CORPORATION
发明人
PAUL GERALD R.
分类号
H04M1/272
主分类号
H04M1/272
代理机构
代理人
主权项
地址
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