Patents by Inventor Randolph C. H. Michaelsen

Randolph C. H. Michaelsen 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).

  • Exercise device
    Patent number: 4593902
    Abstract: An exercise device having a container formed from two mated halves releasably connected to one another and a flexible strap ending in loops capable of encircling one of the container halves which thereby provides a convenient, lightweight foot restraint, easily stored and quickly assembled for use in performing sit-ups in the home or in the office is disclosed.
    Type: Grant
    Filed: August 10, 1984
    Date of Patent: June 10, 1986
    Inventor: Randolph C. H. Michaelsen