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Roger Martin Langdon

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  • Chelmsford, GB
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Patents Grantslast 30 patents

  • Information Patent Grant

    Gas velocity sensor
    • Patent number 7,986,398
    • Issue date Jul 26, 2011
    • BAE Systems plc
    • Roger Martin Langdon
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Acousto-optic devices
    • Patent number 7,894,125
    • Issue date Feb 22, 2011
    • BAE Systems
    • Roger Martin Langdon
    • G02 - OPTICS
  • Information Patent Grant

    Gas velocity sensor
    • Patent number 7,301,610
    • Issue date Nov 27, 2007
    • BAE Systems plc
    • Roger Martin Langdon
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Method and apparatus for laser vibrometry
    • Patent number 7,114,393
    • Issue date Oct 3, 2006
    • BAE Systems plc
    • Roger Martin Langdon
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Sound detection
    • Patent number 6,731,570
    • Issue date May 4, 2004
    • BAE Systems Electronics Limited
    • Roger M Langdon
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Remote air detection
    • Patent number 6,285,288
    • Issue date Sep 4, 2001
    • Marconi Electronic Systems Limited
    • Roger M Langdon
    • B64 - AIRCRAFT AVIATION COSMONAUTICS
  • Information Patent Grant

    Laser radar with reference beam storage
    • Patent number 5,510,890
    • Issue date Apr 23, 1996
    • GEC-Marconi Limited
    • Roger M. Langdon
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Receiver-transmitter for a target identification system
    • Patent number 5,353,109
    • Issue date Oct 4, 1994
    • Gec-Marconi Limited
    • Roger M. Langdon
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Sensor apparatus
    • Patent number 5,323,638
    • Issue date Jun 28, 1994
    • GEC-Marconi Limited
    • Roger M. Langdon
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Helmet mounted display
    • Patent number 5,164,848
    • Issue date Nov 17, 1992
    • GEC-Marconi Limited
    • Kenneth Firth
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    Orientation monitoring apparatus
    • Patent number 5,059,781
    • Issue date Oct 22, 1991
    • Gec-Marconi Limited
    • Roger M. Langdon
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Optical interference position measurement system
    • Patent number 5,026,162
    • Issue date Jun 25, 1991
    • General Electric Company, p.l.c.
    • Roger M. Langdon
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Magnetometer having coil formed by two spiral shaped conductors
    • Patent number 4,887,033
    • Issue date Dec 12, 1989
    • General Motors Corporation
    • Roger M. Langdon
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Photothermal oscillator force sensor
    • Patent number 4,772,786
    • Issue date Sep 20, 1988
    • The General Electric Company, p.l.c.
    • Roger M. Langdon
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Vane for use in monitoring flow of a fluid
    • Patent number 4,596,153
    • Issue date Jun 24, 1986
    • The Marconi Company Limited
    • George A. Macdonald
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Force sensors
    • Patent number 4,594,898
    • Issue date Jun 17, 1986
    • Fisher Controls International, Inc.
    • Richard G. Kirman
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Mass flow measurement device
    • Patent number 4,420,983
    • Issue date Dec 20, 1983
    • The Marconi Company Limited
    • Roger M. Langdon
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Liquid-level measurement
    • Patent number 4,383,443
    • Issue date May 17, 1983
    • The Marconi Company Limited
    • Roger M. Langdon
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Measurement of the density of liquids
    • Patent number 4,240,285
    • Issue date Dec 23, 1980
    • The Marconi Company Limited
    • Roger M. Langdon
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Liquid level sensing devices
    • Patent number 4,213,337
    • Issue date Jul 22, 1980
    • The Marconi Company Limited
    • Roger M. Langdon
    • G01 - MEASURING TESTING