2820921

Information

• Patent Grant
• 2820921

• References
• Source

• Patent Number

  2,820,921

• Date Filed

  Not available

• Date Issued

  Tuesday, January 21, 1958
  66 years ago

• CPC

  • G01S7/06 - Cathode-ray tube displays or other two-dimensional or three-dimensional displays
  • G01S7/2806 - Employing storage or delay devices which preserve the pulse form of the echo signal
  • H01J29/021 - arrangements for eliminating interferences in the tube
  • H01J31/64 - on opposite sides of screen
  • H04N7/0107 - using beam gun storage

• US Classifications

  • 315 - Electric lamp and discharge devices: systems
  • 348 - Television