Patents Assigned to Andrew Hal Walker
  • Alternatively slidable and stationary platform
    Patent number: 9220943
    Abstract: A portable platform is disclosed that may be switched from a sliding mode to a stationary mode and back again by retracting or extending pads from the underside of the device. The embodiments may be used for a variety of purposes, including moving heavy objects, and performing fitness routines.
    Type: Grant
    Filed: October 22, 2013
    Date of Patent: December 29, 2015
    Assignee: Andrew Hal Walker
    Inventor: Andrew Hal Walker