2621239

Information

• Patent Grant
• 2621239

• References
• Source

• Patent Number

  2,621,239

• Date Filed

  Not available

• Date Issued

  Tuesday, December 9, 1952
  73 years ago

• CPC

  • A62C3/08 - in aircraft
  • G08B17/12 - Actuation by presence of radiation or particles
  • Y10S246/01 - Radiant energy devices

• US Classifications

  • 340 - Communications: electrical
  • 236 - Automatic temperature and humidity regulation
  • 246 - Railway switches and signals
  • 250 - Radiant energy
  • 307 - Electrical transmission or interconnection systems
  • 315 - Electric lamp and discharge devices: systems