Patents by Inventor Darwin Zenser

Darwin Zenser 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).

  • Bicycle
    Patent number: 3964765
    Abstract: A bicycle with a frame suspended on the wheels by telescoping shock absorbers that permit large vertical movements of the wheels when they hit bumps without producing large vertical movements of the bicycle frame, so that pedaling can continue uninterrupted in traversing rough terrain.
    Type: Grant
    Filed: November 15, 1974
    Date of Patent: June 22, 1976
    Assignee: Yamaha International Corporation
    Inventor: Darwin Zenser