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发明名称
Key device
摘要
申请公布号
US2921152(A)
申请公布日期
1960.01.12
申请号
US19580783348
申请日期
1958.12.29
申请人
SIMJIAN LUTHER G
发明人
SIMJIAN LUTHER G.
分类号
G06K19/067
主分类号
G06K19/067
代理机构
代理人
主权项
地址
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