Patents by Inventor Dave M. Kohlhoff

Dave M. Kohlhoff 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).

  • Vending machine advertising apparatus and method
    Patent number: 7299576
    Abstract: In some embodiments of the present invention, a vending machine display apparatus and method includes a controller, a display electrically coupled to the controller and adapted to be coupled to the vending machine in a location externally visible on the vending machine, and a power line coupled to the display and adapted to supply power to the display. The display can be associated with the user-manipulatable control and/or with a product in the vending machine dispensed by operation of the user-manipulatable control. In some embodiments, the display is responsive to the controller by changing graphics and/or text displayed by the display.
    Type: Grant
    Filed: December 21, 2004
    Date of Patent: November 27, 2007
    Assignee: CM-Glo, LLC
    Inventors: John D. Martin, Dave M. Kohlhoff
  • Vending machine advertising apparatus and method
    Patent number: 6834452
    Abstract: In some embodiments of the present invention, a vending machine display apparatus and method includes a controller, an electroluminescent display electrically coupled to the controller and adapted to be coupled to the vending machine in a location externally visible on the vending machine, and a power line coupled to the electroluminescent display and adapted to supply power to the electroluminescent display. The electroluminescent display can be associated with the user-manipulatable control and/or with a product in the vending machine dispensed by operation of the user-manipulatable control. In some embodiments, the electroluminescent display is responsive to the controller by changing graphics and/or text displayed by the display.
    Type: Grant
    Filed: November 22, 2002
    Date of Patent: December 28, 2004
    Assignee: C-M Glo, LLC
    Inventors: John D. Martin, Michael L. Martin, Dave M. Kohlhoff
  • Vending machine advertising apparatus and method
    Publication number: 20030150146
    Abstract: In some embodiments of the present invention, a vending machine display apparatus and method includes a controller, an electroluminescent display electrically coupled to the controller and adapted to be coupled to the vending machine in a location externally visible on the vending machine, and a power line coupled to the electroluminescent display and adapted to supply power to the electroluminescent display. The electroluminescent display can be associated with the user-manipulatable control and/or with a product in the vending machine dispensed by operation of the user-manipulatable control. In some embodiments, the electroluminescent display is responsive to the controller by changing graphics and/or text displayed by the display.
    Type: Application
    Filed: November 22, 2002
    Publication date: August 14, 2003
    Inventors: John D. Martin, Michael L. Martin, Dave M. Kohlhoff