Patents by Inventor Lawrence B. O'Brien, deceased

Lawrence B. O'Brien, deceased 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).

  • Paint brush cleaning machine
    Patent number: D348337
    Type: Grant
    Filed: July 29, 1991
    Date of Patent: June 28, 1994
    Assignee: Venture Management Sciences Inc.
    Inventors: Lawrence B. O'Brien, deceased, Walter E. Winston