Patents by Inventor Jan Reef

Jan Reef 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).

  • Thread gaging instrument
    Patent number: 4335518
    Abstract: An instrument for gaging external threads having a frame holding an anvil for supporting axially spaced points on a threaded member and a gaging element for gaging an opposed surface of the threaded member at a point substantially midway between the supported points. The single gaging element floats both radially and axially of the threaded member and the movements are indicated by separate dial indicators.
    Type: Grant
    Filed: February 18, 1981
    Date of Patent: June 22, 1982
    Inventor: Jan Reef