Patents by Inventor Charles Pickrel

Charles Pickrel 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).

  • Patent number: D264841
    Type: Grant
    Filed: December 13, 1979
    Date of Patent: June 8, 1982
    Assignee: Speakerlab, Inc.
    Inventor: Charles Pickrel