Patents by Inventor Joseph F. Wiedner

Joseph F. Wiedner 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).

  • Rowing exercise machine
    Patent number: 5094446
    Abstract: An exercise machine in the form of a rowing machine having opposed cylinders to reduce heat build-up in the cylinders and to exercise most of the user's muscles during forward and backward movement. The machine has a slidable seat with a stop limiting forward movement to reduce leg bending and consequently lower back strain.
    Type: Grant
    Filed: September 6, 1990
    Date of Patent: March 10, 1992
    Inventor: Joseph F. Wiedner