Patents by Inventor David August Siekmeier

David August Siekmeier 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).

  • Independent and biased cultivator support
    Patent number: 3967685
    Abstract: A rotary hoe implement, having hoe support arms independent of adjacent hoe support arms, and a selectively adjustable means for varying the downward pressure exerted by the leaf spring biasing means acting on each support arm.
    Type: Grant
    Filed: July 5, 1974
    Date of Patent: July 6, 1976
    Assignee: Deere & Company
    Inventor: David August Siekmeier