Patents by Inventor Barbara Stem

Barbara Stem 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).

  • Abrasive tipped multipurpose swabs
    Patent number: 5996165
    Abstract: An abrasive cleaning swab comprising a shaft having a quantity of spun material secured to the shaft by adhesive. The spun material may be either metal (eg, steel wool) or plastic and the shaft may be wood, metal or plastic. The spun material may be provided at one or both ends of the shaft.
    Type: Grant
    Filed: February 27, 1998
    Date of Patent: December 7, 1999
    Assignee: Barbara Ann Stem
    Inventor: Barbara Stem