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发明名称
Woven sensing grids for perforated records
摘要
申请公布号
US2448759(A)
申请公布日期
1948.09.07
申请号
US19440521232
申请日期
1944.02.05
申请人
INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人
ARMBRUSTER JOHN W.
分类号
G06K19/067;G06K21/02
主分类号
G06K19/067
代理机构
代理人
主权项
地址
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