3303470

Information

• Patent Grant
• 3303470

• References
• Source

• Patent Number

  3,303,470

• Date Filed

  Not available

• Date Issued

  Tuesday, February 7, 1967
  57 years ago

• CPC

  • B61L7/088 - Common line wire control using series of coded pulses
  • H04Q9/14 - Calling by using pulses
  • H04Q9/16 - by predetermined number of pulses

• US Classifications

  • 340 - Communications: electrical