Patents by Inventor Robert Milo Ringdahl

Robert Milo Ringdahl 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).

  • Radar altimeter
    Patent number: 10488511
    Abstract: A radar system operates at a carrier frequency near the oxygen absorption line. A selected range bin is monitored to measure the signal-to-noise ratio. The signal-to-noise ratio value is used to adjust the carrier frequency so as to maintain a preselected signal-to-noise ratio.
    Type: Grant
    Filed: January 20, 1984
    Date of Patent: November 26, 2019
    Assignee: Honeywell International Inc.
    Inventor: Robert Milo Ringdahl