Patents by Inventor David Graham Pudsey

David Graham Pudsey 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).

  • Navigation aiding systems with one-way ranging and two-way synchronization
    Patent number: 3943509
    Abstract: A navigation aiding system primarily for aircraft consists of a number of spaced apart ground stations. A ranging signal is transmitted to each of a number of aircraft in turn in response to received interrogation signals. The system allows a clock carried by each aircraft to be accurately synchronised with a master clock on the ground to permit the range to be measured precisely.
    Type: Grant
    Filed: March 9, 1973
    Date of Patent: March 9, 1976
    Assignee: Elliott Brothers (London) Limited
    Inventor: David Graham Pudsey