3839681

Information

• Patent Grant
• 3839681

• References
• Source

• Patent Number

  3,839,681

• Date Filed

  Not available

• Date Issued

  Tuesday, October 1, 1974
  50 years ago

• CPC

  • H03J9/04 - using ultrasonic, sonic or infrasonic waves
  • H03J5/0227 - using a counter
  • H03J5/0236 - with possibility to skip over certain counter positions

• US Classifications

  • 327 - Miscellaneous active electrical nonlinear devices, circuits, and systems
  • 334 - Tuners
  • 455 - Telecommunications