发明申请
- 专利标题： Underwater drawing tablet
- 专利标题（中）： 水下画片
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申请号： US11897968申请日： 2007-08-31
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公开(公告)号： US20080060855A1公开(公告)日： 2008-03-13
- 发明人: Mark Hagan
- 申请人： Mark Hagan
- 主分类号： G06F3/041
- IPC分类号： G06F3/041
摘要：
An underwater writing and drawing tablet that stretches a length of waterproof (plastic) vellum between two rollers over a flat surface thereby enabling the user to easily draw or write on said vellum and permanently save the drawing and writing.
公开/授权文献
- US07731501B2 Underwater drawing tablet 公开/授权日：2010-06-08
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