3717818

Information

• Patent Grant
• 3717818

• References
• Source

• Patent Number

  3,717,818

• Date Filed

  Not available

• Date Issued

  Tuesday, February 20, 1973
  51 years ago

• CPC

  • G05B1/02 - for comparing analogue signals
  • G01R19/1658 - AC voltage or recurrent signals
  • H02H3/08 - responsive to excess current
  • H02H3/46 - responsive to frequency deviations

• US Classifications

  • 327 - Miscellaneous active electrical nonlinear devices, circuits, and systems