Patents by Inventor Helmut Weiste

Helmut Weiste 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).

  • Pneumatic distribution machine with a flat tube bend
    Patent number: 6443671
    Abstract: The invention is a pneumatic delivery line of a type used for distributing seeds or fertilizer. The pneumatic delivery line is guided to the distributor in an essentially vertical manner. The delivery line includes a flat tube bend at some point along its length. The delivery line may have an unevenly constructed inner wall.
    Type: Grant
    Filed: August 11, 2000
    Date of Patent: September 3, 2002
    Inventor: Helmut Weiste