Patents by Inventor Luther Shane Stewart

Luther Shane Stewart 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).

  • Boat lift
    Patent number: 7377720
    Abstract: A boat lift supported completely from land adjacent to water in which a boat is to be operated for movement between storage and launching positions by the use of parallelogram linkage powered by pairs of hydraulic actuators arranged at opposite sides of the boat lift. A walk and handrails are formed between the hydraulic actuators for use by passengers boarding the boat in the boat launch position.
    Type: Grant
    Filed: August 18, 2005
    Date of Patent: May 27, 2008
    Inventor: Luther Shane Stewart