3133158

Information

• Patent Grant
• 3133158

• References
• Source

• Patent Number

  3,133,158

• Date Filed

  Not available

• Date Issued

  Tuesday, May 12, 1964
  61 years ago

• CPC

  • H04Q1/4465 - the same frequency being used for all signalling information

• US Classifications

  • 340 - Communications: electrical
  • 361 - Electricity: electrical systems and devices