3665440

Information

• Patent Grant
• 3665440

• References
• Source

• Patent Number

  3,665,440

• Date Filed

  Not available

• Date Issued

  Tuesday, May 23, 1972
  52 years ago

• CPC

  • G08B17/12 - Actuation by presence of radiation or particles
  • F23N2029/08 - detecting flame flicker
  • F23N2029/14 - using two or more different types of flame sensor

• US Classifications

  • 340 - Communications: electrical
  • 250 - Radiant energy