发明名称 White board eraser
摘要 An eraser for removal of dry ink dust and for conditioning of white boards is provided which includes a stack of fabric layers of semi rectangular shape which are fastened to a jacket cover, which is folded over a central core, the fabric layers having tab dispensing ends and other tab ends fastened to the cover, which layers can be removed one at a time. The fabric layers may be treated with cleaning and anti-static compounds.
申请公布号 US4937910(A) 申请公布日期 1990.07.03
申请号 US19880277764 申请日期 1988.11.30
申请人 FRAZIER, THOMAS G. 发明人 FRAZIER, THOMAS G.
分类号 B43L21/00 主分类号 B43L21/00
代理机构 代理人
主权项
地址