Patents by Inventor Graham Hatton-Downward

Graham Hatton-Downward 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).

  • Warning System
    Publication number: 20080198026
    Abstract: Warning system for a SCUBA diving apparatus that emits a first visible indication when the pressure in the tank falls below a first predetermined level and a second visible indication when the pressure in the tank falls below a second predetermined level which is lower than the first predetermined level. The warning system (10) is mountable on the first stage (14) of the SCUBA regulator.
    Type: Application
    Filed: November 28, 2005
    Publication date: August 21, 2008
    Inventor: Graham Hatton-Downward