3315231

Information

• Patent Grant
• 3315231

• References
• Source

• Patent Number

  3,315,231

• Date Filed

  Not available

• Date Issued

  Tuesday, April 18, 1967
  57 years ago

• CPC

  • H03K17/60 - using bipolar transistors
  • G08B25/00 - Alarm systems in which the location of the alarm condition is signalled to a central station
  • G08C19/30 - in which transmission is by selection of one or more conductors or channels from a plurality of conductors or channels

• US Classifications

  • 340 - Communications: electrical