2917731

Information

• Patent Grant
• 2917731

• References
• Source

• Patent Number

  2,917,731

• Date Filed

  Not available

• Date Issued

  Tuesday, December 15, 1959
  65 years ago

• CPC

  • G08B25/14 - Central alarm receiver or annunciator arrangements
  • G08B5/36 - using visible light sources
  • G08B23/00 - Alarms responsive to unspecified undesired or abnormal conditions
  • B64D2700/62219 - Electric safety devices

• US Classifications

  • 340 - Communications: electrical