Patents by Inventor Lawrence D. Richman

Lawrence D. Richman has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Light transmission puzzle game
    Patent number: 4605231
    Abstract: A puzzle game having at least one solution comprising at least 2 superposable light permeable portions. These portions are disposed in such a way that at least one superposition of light permeable portions in individually light continuous disposition will provide one solution. Light permeable portions may be oriented by means of a holder. In some embodiments, light permeable portions are translucent, transparent, polarizing or fiber optic.
    Type: Grant
    Filed: September 19, 1984
    Date of Patent: August 12, 1986
    Inventor: Lawrence D. Richman