Patents by Inventor Michael Krisa

Michael Krisa 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).

  • Patent number: 4861221
    Abstract: A lifting and towing attachment for use on a trailer cab having a conventional fifth wheel coupler, the attachment readily converting the cab for use in lifting and towing a disabled vehicle, particularly large vehicles such as dump trucks, buses, or other trailer cabs.
    Type: Grant
    Filed: March 29, 1988
    Date of Patent: August 29, 1989
    Inventor: Michael Krisa