Patents by Inventor John R. Janzen

John R. Janzen 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).

  • Patent number: 5425542
    Abstract: An illuminated device such as a projectile or dart is provided with a battery, one or more light emitting diodes and a switching device wherein switching is accomplished either by relative motion between body and shaft, or by removal and re-insertion of the flite. Conductive elements may be incorporated into the components of the device which may be formed of a conductive material which may be castable or moldable such as plastic, and which may be formed into separate, electrically isolated conductive paths by a molding process.
    Type: Grant
    Filed: May 12, 1993
    Date of Patent: June 20, 1995
    Inventors: James D. Blackwood, John R. Janzen