Patents by Inventor Laurence H. Konvalin

Laurence H. Konvalin 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).

  • Heavy metals separator
    Patent number: 4389309
    Abstract: A heavy metal separator, including a rotatable paddle inside a tank receiving placer ore, and a discharge tube and a discharge pipe at the bottom of the tank, the tube serving to carry off the heavy metal, while the pipe carries off the remaining ore fragments.
    Type: Grant
    Filed: November 2, 1981
    Date of Patent: June 21, 1983
    Inventor: Laurence H. Konvalin