Patents by Inventor Jack W. Crain

Jack W. Crain 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).

  • Life support system knife
    Patent number: D302839
    Type: Grant
    Filed: June 22, 1987
    Date of Patent: August 15, 1989
    Inventor: Jack W. Crain
  • Tomahawk
    Patent number: D318896
    Type: Grant
    Filed: August 9, 1988
    Date of Patent: August 6, 1991
    Inventor: Jack W. Crain
  • Double-edged knife
    Patent number: D319280
    Type: Grant
    Filed: August 9, 1988
    Date of Patent: August 20, 1991
    Inventor: Jack W. Crain