2989640

Information

• Patent Grant
• 2989640

• References
• Source

• Patent Number

  2,989,640

• Date Filed

  Not available

• Date Issued

  Tuesday, June 20, 1961
  63 years ago

• CPC

  • G01S3/788 - producing a frequency modulation characteristic
  • F41G7/30 - Command link guidance systems
  • F41G7/303 - Sighting or tracking devices especially provided for simultaneous observation of the target and of the missile

• US Classifications

  • 348 - Television
  • 244 - Aeronautics and astronautics
  • 250 - Radiant energy