Resources Contact Us Home
Educational and amusement apparatus

Image Number 2 for United States Patent #4428732.

An educational and amusement device includes elements in the form of an alphabet and/or the digits of a numbering system. Each character element is similarly divided by a plurality of essentially similar parallel lines, which may consist of a first set of parallel lines alone or first and second sets, with the second set of parallel lines oriented to extend in an opposite and perpendicular direction from such first set of lines. Each element includes at least three parts but less than ten, and preferably is four or five parts for sufficient complexity to maintain interest of a child or other person having a learning disability but of a sufficient simplicity to prevent frustration. Each element may be formed with the parts releasably interconnected with each other as by water soluble adhesive. Each element can be made progressively more complex.

  Recently Added Patents
Etching apparatus and methods
Cell proliferation inhibitor
Signal phase-based location of network nodes
Image reading apparatus
Data communication system, data transmitting apparatus, data transmitting method, and method for determining packet size and redundancy
Method and apparatus for supporting HARQ
Reception circuit and signal reception method
  Randomly Featured Patents
Portable electronic drum set
System and method of retrieving a watermark within a signal
High strength aluminum alloy
Ceramic heater for a glow plug having tungsten electrode wires with metal coating
Preparation of wine having a low calorie content and a reduced alcohol content
Extensions for apertures in panels
Wheel skate device
Sequential biological/chemical/biological treatment of organic waste
Method and system for classifying mobile terminals
Arrangement for supporting and guiding a cyclone skirt in a boiler having a circulating fluidized bed