Patents by Inventor John M. Chupik

John M. Chupik 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 sill and adjustable threshold
    Patent number: 4476653
    Abstract: A wooden door sill has an inclined tread portion rising to a threshold which lies beneath the door when the latter is closed. The threshold has a longitudinal upwardly-open groove containing a strip. In order to provide an adjustable fit of the strip against the under edge of the door, the strip is screwed down against a resilient compressible filler strip in the bottom of the groove.
    Type: Grant
    Filed: January 10, 1983
    Date of Patent: October 16, 1984
    Assignee: John M. Chupik
    Inventors: Wayne Speer, John M. Chupik
  • Four-way double door frame
    Patent number: 4214405
    Abstract: A frame for a double door, one door fixed and the other pivoted, permits the pivoted door to be mounted on a center mull either with left- or right-handed orientation, and to swing inwardly or outwardly.
    Type: Grant
    Filed: May 1, 1979
    Date of Patent: July 29, 1980
    Inventor: John M. Chupik