Patents by Inventor Leon D. Lieberman

Leon D. Lieberman 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).

  • Equipment for, and methods of playing, a prize drawing game of chance
    Patent number: 5413341
    Abstract: Equipment and methods of entering and playing a prize drawing game of chance are disclosed, some of which do not require the participant to make a purchase in order to enter. The five ways of entering the game include the use of a written entry form which is printed, at intervals, along the length of a cash register tape, such that the entry forms are disseminated among customers when cash register receipts are generated by the use of the tape and are given to customers.
    Type: Grant
    Filed: June 29, 1993
    Date of Patent: May 9, 1995
    Inventor: Leon D. Lieberman
  • Method of smoking food products
    Patent number: 4372981
    Abstract: A method of smoking meat or other food products wherein a high voltage electric field is utilized to cause particles of smoke to be drawn to the food product being smoked.
    Type: Grant
    Filed: August 31, 1978
    Date of Patent: February 8, 1983
    Inventor: Leon D. Lieberman