Patents by Inventor Marvin N. Gag

Marvin N. Gag 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).

  • Patent number: 4832631
    Abstract: A manually powered pair of crank operated flat paddles used by a swimmer combines a rotary and paddling motion. One paddle is rotated to engage the water while the opposite paddle is disengaged and provides flotation only. The opposite paddle is then rotated to engage the water while the first paddle is disengaged. This apparatus combines support with propulsion to assist the beginning swimmer. The motion of the swimmer's arms using this device mimics a normal swimming stroke and aids the learning process.
    Type: Grant
    Filed: April 25, 1988
    Date of Patent: May 23, 1989
    Inventor: Marvin N. Gag