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发明名称
Card support
摘要
申请公布号
US3354885(A)
申请公布日期
1967.11.28
申请号
US19640410249
申请日期
1964.11.10
申请人
WILHELM LUDWIG
发明人
LUDWIG WILHELM
分类号
G06K21/04
主分类号
G06K21/04
代理机构
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