3764974

Information

• Patent Grant
• 3764974

• References
• Source

• Patent Number

  3,764,974

• Date Filed

  Not available

• Date Issued

  Tuesday, October 9, 1973
  51 years ago

• CPC

  • G08B19/00 - Alarms responsive to two or more different undesired or abnormal conditions
  • G07C5/0875 - using magnetic data carriers

• US Classifications

  • 340 - Communications: electrical