Patents by Inventor Russell S. Gurstein

Russell S. Gurstein 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).

  • Cleaning machine for carpet, upholstery and draperies
    Patent number: 4803466
    Abstract: A cleaning machine for carpet, upholstery, draperies, and the like is designed with a safety system to prevent the cleaning liquid from being inadvertently overheated. The system senses the electrical conductivity or the density of the liquid and then limits the heating to a temperature which has been programmed to correspond that conductivity or density.
    Type: Grant
    Filed: September 11, 1987
    Date of Patent: February 7, 1989
    Assignee: U.S. Products, Inc.
    Inventors: Bernard Gurstein, Russell S. Gurstein
  • Portable cleaning machine for carpets, draperies and upholstery
    Patent number: D302613
    Type: Grant
    Filed: September 26, 1986
    Date of Patent: August 1, 1989
    Assignee: U.S. Products, Inc.
    Inventor: Russell S. Gurstein
  • Air cooled floor polishing machine
    Patent number: D343705
    Type: Grant
    Filed: March 27, 1992
    Date of Patent: January 25, 1994
    Assignee: U. S. Products, Inc.
    Inventors: Russell S. Gurstein, Steven G. Misterek
  • High pressure carpet extractor
    Patent number: D343706
    Type: Grant
    Filed: July 8, 1992
    Date of Patent: January 25, 1994
    Assignee: U.S. Products, Inc.
    Inventor: Russell S. Gurstein