Patents by Inventor Glen N. Christoffel

Glen N. Christoffel 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).

  • Safety lock for a knife storage block
    Patent number: D426139
    Type: Grant
    Filed: October 29, 1997
    Date of Patent: June 6, 2000
    Assignee: Imperial Schrade Corp.
    Inventors: Glen N. Christoffel, Peter F. Lynch, Walter A. Gardiner