3784753

Information

• Patent Grant
• 3784753

• References
• Source

• Patent Number

  3,784,753

• Date Filed

  Not available

• Date Issued

  Tuesday, January 8, 1974
  50 years ago

• CPC

  • H03G3/301 - the gain being continuously variable
  • G01C17/30 - Earth-inductor compasses
  • G01C17/38 - Testing, calibrating, or compensating of compasses
  • G01R33/025 - Compensating stray fields
  • G08C19/48 - being the type with a three-phase stator and a rotor fed by constant-frequency ac
  • H03G1/0047 - using photo-electric elements
  • H04J7/00 - Multiplex systems in which the amplitudes or durations of the signals in individual channels are characteristic of those channels

• US Classifications

  • 370 - Multiplex communications