Patents by Inventor Robert Cheetham Halstead

Robert Cheetham Halstead 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).

  • Ventilation rotor
    Patent number: D471624
    Type: Grant
    Filed: September 20, 2001
    Date of Patent: March 11, 2003
    Assignee: Flettner Ventilator Limited
    Inventors: Christopher John Hurlstone, Mark Anthony Di Cioccio, Reuben Wu, Sophie Rebecca Butler, Robert Cheetham Halstead, Alan Peter Tye, Kevin Alan Alex Tye
  • Ventilation cover
    Patent number: D471971
    Type: Grant
    Filed: September 20, 2001
    Date of Patent: March 18, 2003
    Assignee: Flettner Ventilator Limited
    Inventors: Christopher John Hurlstone, Mark Anthony Di Cioccio, Reuben Wu, Sophie Rebecca Butler, Robert Cheetham Halstead, Alan Peter Tye, Kevin Alan Alex Tye