Patents Assigned to Rona Kaufman
  • Emergency vocal aid
    Patent number: D381330
    Type: Grant
    Filed: September 14, 1995
    Date of Patent: July 22, 1997
    Assignee: Rona Kaufman
    Inventors: Rona Kaufman, Jack Kaufman, Phillis Stacy, Behzad Tabatabai, Steven Lee Stirnett, Jeff Turner