3491291

Information

• Patent Grant
• 3491291

• References
• Source

• Patent Number

  3,491,291

• Date Filed

  Not available

• Date Issued

  Tuesday, January 20, 1970
  55 years ago

• CPC

  • H01J23/18 - Resonators
  • G01N22/00 - Investigating or analysing materials by the use of microwaves

• US Classifications

  • 324 - Electricity: measuring and testing
  • 331 - Oscillators