Patents by Inventor Jack F. Back

Jack F. Back 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).

  • Door hinge duplicating template
    Patent number: 4586262
    Abstract: This door hinge duplicating template is designed to transfer an old hinge routing of one door to a new door, easily and quickly. Primarily, it consists of a face plate having a pair of attached spacer blocks, for holding the old door properly spaced from the new door that is to be routed for a hinge. It further includes a pair of insert plates, for adapting the template to be used for two hinge sizes.
    Type: Grant
    Filed: August 27, 1984
    Date of Patent: May 6, 1986
    Inventor: Jack F. Back