Patents Assigned to Handtronix, Inc.
  • Hand-held hearing screener
    Patent number: D335349
    Type: Grant
    Filed: August 21, 1990
    Date of Patent: May 4, 1993
    Assignee: Handtronix, Inc.
    Inventors: Paul C. Lyon, Lynn S. Alvord, Evan B. Campbell, Rex D. Bodrero, Ron Carter