3726990

Information

• Patent Grant
• 3726990

• References
• Source

• Patent Number

  3,726,990

• Date Filed

  Not available

• Date Issued

  Tuesday, April 10, 1973
  51 years ago

• CPC

  • H03H9/6436 - having one acoustic track only
  • H03B5/32 - being a piezo-electric resonator
  • H03B5/326 - the resonator being an acoustic wave device
  • H03D3/16 - by means of electromechanical resonators
  • H03D3/34 - by means of electromechanical devices
  • H03H9/0296 - Surface acoustic wave [SAW] devices having both acoustic and non-acoustic properties
  • H03H9/72 - Networks using surface acoustic waves
  • H03K3/16 - using a transformer for feedback
  • H04N9/647 - I.F amplifiers
  • H04N9/78 - for separating the brightness signal or the chrominance signal from the colour television signal

• US Classifications

  • 348 - Television