Patents Represented by Attorney, Agent or Law Firm Michael L. Greenberg
  • Unified brake system for towed and towing vehicles
    Patent number: 6609766
    Abstract: The present invention provides a new braking system for a first vehicle towing a second vehicle on its own four wheels. The system exhibits a process by which the towing vehicle's brake system send an electronic relay to the towed vehicle's brake system making the brake depress at the proper rate of deceleration.
    Type: Grant
    Filed: August 18, 2000
    Date of Patent: August 26, 2003
    Inventor: Ronald Chesnut
  • Circular chess system
    Patent number: 6592123
    Abstract: A circular chess system is disclosed wherein an extra diameter is included which through voiding a variable number of spaces changes the play and control of the game. There are three main versions of play, maximal, medial, and minimal with 70, 68 and 66 spaces of play respectively.
    Type: Grant
    Filed: July 24, 2000
    Date of Patent: July 15, 2003
    Inventors: Alan Roy Mattlage, Martin Raymond Mattlage
  • Arm, shoulder, and back support
    Patent number: 6190340
    Abstract: A harness that fully supports the user's back, shoulders, and arms while working in a seated position. The harness provides support without restricting the user's freedom of movement. It is fully adjustable and conforms to a wide variety of user body types. Finally, it provides a safe, comfortable, and economic means of supporting the user's back, arms, and shoulders, allowing them to work more comfortably and possibly more efficiently.
    Type: Grant
    Filed: October 14, 1998
    Date of Patent: February 20, 2001
    Assignee: Phillip and Joanne Borell
    Inventor: Jan Borell
  • Circular chess board
    Patent number: D456456
    Type: Grant
    Filed: August 15, 2000
    Date of Patent: April 30, 2002
    Inventors: Alan Roy Mattlage, Martin Raymond Mattlage