Patents by Inventor Michael G. Krol

Michael G. Krol 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).

  • Newspaper vending machine
    Patent number: D353841
    Type: Grant
    Filed: February 17, 1993
    Date of Patent: December 27, 1994
    Assignee: Seven, Ltd.
    Inventors: Michael G. Krol, Mark O. Snyker
  • External defibrillator
    Patent number: D394903
    Type: Grant
    Filed: August 26, 1996
    Date of Patent: June 2, 1998
    Assignee: SurVivaLink Corporation
    Inventors: Steven D. Barkley, Robert K. Johnson, Kenneth F. Olson, Michael G. Krol