Patents Assigned to Brentford Electric Limited
  • Magnetic or electric measuring devices
    Patent number: 4114087
    Abstract: Apparatus for measuring magnetic field strength which comprises two Nuclear Magnetic Resonance cells (the NMR cells), a field generator for applying to the NMR cells bias magnetic field which is parallel and of substantially equal strength at each NMR cell, an excitation assembly for separately magnetically exciting each NMR cell at its own Larmor precession, or resonance, frequency, and a device for deriving a signal in accord with the difference between the Larmor frequencies of the two cells.
    Type: Grant
    Filed: October 18, 1976
    Date of Patent: September 12, 1978
    Assignee: Brentford Electric Limited
    Inventor: Michael George Joseph Fry