发明名称 Electronic display apparatus
摘要 An apparatus is provided to produce an optical illusion of variable geometric patterns. The apparatus may be used as an electronic toy, display or kinetic art mural, as well as a demonstration aid in geometry, physics or physiology. An array of light emitting diodes mounted on a rotating disk or carrier is selectively activated to control the geometric patterns formed.
申请公布号 US4298868(A) 申请公布日期 1981.11.03
申请号 US19800139178 申请日期 1980.04.11
申请人 SPURGEON, JOHN R. 发明人 SPURGEON, JOHN R.
分类号 A63J17/00;F21V33/00;G09B23/04;G09B23/06;G09F9/30;G09F13/30;(IPC1-7):G08B5/36 主分类号 A63J17/00
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