3909732

Information

• Patent Grant
• 3909732

• References
• Source

• Patent Number

  3,909,732

• Date Filed

  Not available

• Date Issued

  Tuesday, September 30, 1975
  49 years ago

• CPC

  • H03J9/04 - using ultrasonic, sonic or infrasonic waves
  • H03J5/0227 - using a counter
  • H03J7/28 - using counters or frequency dividers

• US Classifications

  • 377 - Electrical pulse counters, pulse dividers, or shift registers: circuits and systems
  • 327 - Miscellaneous active electrical nonlinear devices, circuits, and systems
  • 334 - Tuners
  • 367 - Communications, electrical: acoustic wave systems and devices
  • 455 - Telecommunications