Patents by Inventor Robert R. Butcher

Robert R. Butcher 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).

  • Hand-held ultrasonic contact transducer
    Patent number: D343801
    Type: Grant
    Filed: April 17, 1992
    Date of Patent: February 1, 1994
    Assignee: Velocity Kontrol Systems
    Inventors: Robert N. Burns, Robert R. Butcher