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发明名称
Improvements in or relating to transparency slides
摘要
申请公布号
GB773114(A)
申请公布日期
1957.04.24
申请号
GB19550019359
申请日期
1955.07.05
申请人
ARNOLD PERROT
发明人
分类号
B21D53/00;G03D15/10
主分类号
B21D53/00
代理机构
代理人
主权项
地址
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