Patents by Inventor Michael J. Dolder

Michael J. Dolder 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: 4483531
    Abstract: This is an exercise device in the form of a pair of trampolines which are spaced apart but sufficiently close together such that a person can rebound from one device to the other using first one leg on one trampoline and the other leg on the other without contacting or touching the floor.
    Type: Grant
    Filed: July 19, 1982
    Date of Patent: November 20, 1984
    Inventors: Lynn F. Laseman, Sam Poulos, Michael J. Dolder