Patents by Inventor Frederick J. Marsh

Frederick J. Marsh 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).

  • Maintaining an ice rink adjacent a side edge
    Patent number: 4918844
    Abstract: Resurfacing or conditioning of the ice surface of an ice rink in the area adjacent the edge of the ice and the kickboards defining the edge of the ice is carried out by a burner unit which applies a propane flame in a direction downwardly onto the ice in an area confined by a metal guide surrounding the flame. The unit melts the ice on the board and at the edge to prevent ice build up using a simple economic construction on a device which produces little or no toxic fumes.
    Type: Grant
    Filed: July 14, 1989
    Date of Patent: April 24, 1990
    Inventor: Frederick J. Marsh