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发明名称
File tab or signal
摘要
申请公布号
GB802610(A)
申请公布日期
1958.10.08
申请号
GB19570003774
申请日期
1957.02.04
申请人
GEORGE B. GRAFF COMPANY
发明人
分类号
B42F19/00
主分类号
B42F19/00
代理机构
代理人
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