Patents by Inventor Mark S. Henriksen

Mark S. Henriksen 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).

  • Adjustable exercise step and method
    Patent number: 5599258
    Abstract: A step for aerobic exercise has a stationary base support (A) carrying in telescopic relation, an upper member (B) which is manually moveable for making height adjustments by selectively engaging interlocking elements (C) and (D) carried by the stationary support, and the moveable upper member respectively so that a user may approach the step from any direction for exercising or for making height adjustments by moving the upper member (B) engaging and disengaging the interlocking elements by manipulating the vertical and horizontal positioning of the upper member with respect to the stationary member.
    Type: Grant
    Filed: September 23, 1994
    Date of Patent: February 4, 1997
    Assignee: The Firm, Inc.
    Inventors: Michael R. Stone, Mark S. Henriksen
  • Adjustable exercise step for aerobic exercise
    Patent number: D385317
    Type: Grant
    Filed: September 23, 1994
    Date of Patent: October 21, 1997
    Assignee: The Firm, Inc.
    Inventor: Mark S. Henriksen
  • Exercise step for aerobic exercise
    Patent number: D424123
    Type: Grant
    Filed: February 29, 1996
    Date of Patent: May 2, 2000
    Assignee: The Firm, Inc.
    Inventor: Mark S. Henriksen