Patents Assigned to John Stephen Lanphear
  • Patent number: 9562358
    Abstract: An adjustable staircase includes an upper stair, a lower stair, a first bar and a second bar. The vertical distance between the upper stair and the lower stair is adjustable. Also, each bar is coupled to each of the upper and lower stairs, and the first bar is configured to function as a guard. As a result, the first bar blocks a pinch point between the first and second bars.
    Type: Grant
    Filed: January 26, 2015
    Date of Patent: February 7, 2017
    Assignee: John Stephen Lanphear
    Inventor: John Stephen Lanphear