2471409

Information

• Patent Grant
• 2471409

• References
• Source

• Patent Number

  2,471,409

• Date Filed

  Not available

• Date Issued

  Tuesday, May 31, 1949
  75 years ago

• CPC

  • H01J31/24 - with screen acting as light valve by shutter operation
  • G01S1/02 - using radio waves

• US Classifications

  • 348 - Television
  • 313 - Electric lamp and discharge devices
  • 359 - Optical: systems and elements