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发明名称
Laminates for punch card substitutes
摘要
申请公布号
US3405256(A)
申请公布日期
1968.10.08
申请号
US19640367508
申请日期
1964.05.14
申请人
SPERRY RAND CORPORATION
发明人
WEBER ERWIN GOTTFRIED
分类号
G06K19/08
主分类号
G06K19/08
代理机构
代理人
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