Patents by Inventor John Collin

John Collin 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).

  • Hitch adaptor
    Patent number: 4176852
    Abstract: A tractor drawbar terminates in a hook. An adaptor is provided to convert the hook into a clevis. The adaptor encompasses the hook and bears against a portion of it to inhibit movement in a vertical direction.
    Type: Grant
    Filed: January 14, 1977
    Date of Patent: December 4, 1979
    Assignee: Massey-Ferguson Services N.V.
    Inventor: John Collin