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发明名称
RECORD READER
摘要
申请公布号
US3548162(A)
申请公布日期
1970.12.15
申请号
USD3548162
申请日期
1967.02.20
申请人
EDUCATIONAL TESTING SERVICE
发明人
HARRY J. YOUNG;WILLIAM R. BEHN
分类号
G06K7/10;(IPC1-7):G06K7/10;H01H43/08
主分类号
G06K7/10
代理机构
代理人
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