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
UV liquid treatment system
Controlling transmission resources in mobile radio systems with dualtransfer mode
Conversion of 5-(chloromethyl)-2-furaldehyde into 5-methyl-2-furoic acid and derivatives thereof
Image forming apparatus forming images in response to image formation request from operation unit or external device
Negative electrode material for non-aqueous electrolyte secondary battery, method for manufacturing negative electrode material for non-aqueous electrolyte secondary battery, non-aqueous elect
Sending notification of event
  Randomly Featured Patents
Ilex plant - mesid variety
Method for signal transmission using spectrally efficient orthogonal modulation
Front face of a motor vehicle wheel
Coded modulation with unequal error protection for fading channels
Spa chemistry monitoring and chemical dispensing unit
Integrated power passives
Shoe skate
Blends from branched polyaryl ethers and hydrophilic polymers
Active noise cancellation for a torpedo seeker head
Flue gas pollution eliminator