3787612

Information

• Patent Grant
• 3787612

• References
• Source

• Patent Number

  3,787,612

• Date Filed

  Not available

• Date Issued

  Tuesday, January 22, 1974
  50 years ago

• CPC

  • H04N5/4446 - IF amplifier circuits specially adapted for B&W TV
  • H03B5/326 - the resonator being an acoustic wave device
  • H03D1/2281 - using a phase locked loop
  • H03J7/04 - where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant
  • H03B5/04 - Modifications of generator to compensate for variations in physical values
  • H03B2200/0018 - relating to the cutting angle of a crystal
  • H03B2200/0022 - characterised by the substrate
  • H03B2200/0078 - generating or using signals in quadrature

• US Classifications

  • 455 - Telecommunications