3873894

Information

• Patent Grant
• 3873894

• References
• Source

• Patent Number

  3,873,894

• Date Filed

  Not available

• Date Issued

  Tuesday, March 25, 1975
  50 years ago

• CPC

  • H03J1/18 - Control by auxiliary power
  • H03J9/04 - using ultrasonic, sonic or infrasonic waves
  • H03K3/286 - bistable
  • H04W52/0209 - in terminal devices

• US Classifications

  • 361 - Electricity: electrical systems and devices