Patents by Inventor George Droste

George Droste 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).

  • Vibratory tumbler
    Patent number: D288819
    Type: Grant
    Filed: March 5, 1984
    Date of Patent: March 17, 1987
    Assignee: Lyman Products Corporation
    Inventor: George Droste
  • Vibratory tumbler base
    Patent number: D290013
    Type: Grant
    Filed: August 14, 1986
    Date of Patent: May 26, 1987
    Assignee: Lyman Products Corporation
    Inventor: George Droste