Patents Assigned to Challenge Products, Inc.
  • Heated dental knife
    Patent number: 5889257
    Abstract: A heated dental knife for trimming thermoplastic dental trays which has a heat sink temperature stabilizer and heating element designed to maintain a pre-selected blade temperature without adjustments under normal use in cutting such dental trays.
    Type: Grant
    Filed: May 13, 1998
    Date of Patent: March 30, 1999
    Assignee: Challenge Products, Inc.
    Inventors: Harry W. Schader, Charles L. Bull