Patents by Inventor Henry Graham Cornelius Shelford

Henry Graham Cornelius Shelford 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).

  • BREATHING APPARATUS
    Publication number: 20120240931
    Abstract: Breathing apparatus (10) for high altitude climbing is provided and comprises: a compressor (30) for generating compressed air; means (50) for delivering air at approximately standard atmospheric pressure to a climber; and a power source (20) for powering the compressor.
    Type: Application
    Filed: December 3, 2010
    Publication date: September 27, 2012
    Inventor: Henry Graham Cornelius Shelford