Patents by Inventor Walter R. Colwell

Walter R. Colwell 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).

  • Three component protective head gear powered by a rechargeable battery
    Patent number: 7304442
    Abstract: A three-component, protective headgear or helmet, and circuits therefor is provided with a battery-powered LED head lamp, which may be used by construction workers, search and rescue persons, cyclists, police, fireman, and the like. The battery may be replaceable or rechargeable and has long-term, uniform output characteristics driven by unique circuitry.
    Type: Grant
    Filed: May 5, 2006
    Date of Patent: December 4, 2007
    Inventor: Walter R. Colwell
  • Three-component protective head gear powered by a rechargeable battery
    Patent number: 7075250
    Abstract: A three-component, protective headgear or helmet is provided with a battery-powered LED head lamp, which may be used by construction workers, search and rescue persons, cyclists, police, fireman, and the like. The battery may be replaceable or rechargeable and has long-term, uniform output characteristics driven by unique circuitry.
    Type: Grant
    Filed: December 2, 2003
    Date of Patent: July 11, 2006
    Assignee: SETO Holdings, Inc.
    Inventor: Walter R. Colwell
  • Playing card holder
    Patent number: D253615
    Type: Grant
    Filed: June 20, 1977
    Date of Patent: December 4, 1979
    Inventor: Walter R. Colwell
  • Body of an armored land vehicle
    Patent number: D266234
    Type: Grant
    Filed: May 12, 1980
    Date of Patent: September 21, 1982
    Inventor: Walter R. Colwell