发明名称 Indicator aid for blind - is fan with three large black circles which is opened up to indicate desire to cross road
摘要 <p>An indicator for use by the blind is in the form of a fan that may be used for crossing roads. The fan has two components pinned together at one end(e). An indent (d) maintains the fan open to display three distinctive black circular patterns on both sides. It can be folded up for carrying in the pocket or handbag.</p>
申请公布号 DE2810011(A1) 申请公布日期 1979.09.13
申请号 DE19782810011 申请日期 1978.03.08
申请人 LANG,MAX 发明人 LANG,MAX
分类号 G09F7/00;(IPC1-7):09F7/00;45B27/00;09F13/16;09B19/00 主分类号 G09F7/00
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