3421156

Information

• Patent Grant
• 3421156

• References
• Source

• Patent Number

  3,421,156

• Date Filed

  Not available

• Date Issued

  Tuesday, January 7, 1969
  56 years ago

• CPC

  • F23N5/082 - using electronic means
  • F23N5/242 - using electronic means
  • G07C3/005 - during manufacturing process
  • G08B23/00 - Alarms responsive to unspecified undesired or abnormal conditions
  • G08B29/04 - Monitoring of the detection circuits
  • F23N2027/12 - Burner simulation or checking
  • F23N2027/18 - Applying test signals
  • F23N2031/10 - for component failures

• US Classifications

  • 340 - Communications: electrical
  • 315 - Electric lamp and discharge devices: systems
  • 361 - Electricity: electrical systems and devices