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经营范围
发明名称
CARD ENCODER
摘要
申请公布号
CA904657(A)
申请公布日期
1972.07.11
申请号
CAD904657
申请日期
申请人
DAVID E. GUTHRIE
发明人
DAVID E. GUTHRIE
分类号
G06K1/12;G06K1/16;G06K1/20;G06K21/06;(IPC1-7):G06K21/06
主分类号
G06K1/12
代理机构
代理人
主权项
地址
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