Patents by Inventor Erick Lehfeldt

Erick Lehfeldt 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).

  • Auxiliary flush valve mechanism for toilet tanks
    Patent number: 3988786
    Abstract: An auxiliary mechanism whereby the water release from a toilet tank can be controlled and limited at each operation. A second handle is provided, the use of which permits only a restricted amount of lift of the flush valve.
    Type: Grant
    Filed: June 17, 1975
    Date of Patent: November 2, 1976
    Inventor: Erick Lehfeldt