Patents by Inventor Ronald H. Knopp

Ronald H. Knopp 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).

  • Combined hot and cold liquid container
    Patent number: D344657
    Type: Grant
    Filed: June 9, 1992
    Date of Patent: March 1, 1994
    Inventor: Ronald H. Knopp
  • Jumbo hoop
    Patent number: D359994
    Type: Grant
    Filed: March 29, 1994
    Date of Patent: July 4, 1995
    Inventor: Ronald H. Knopp