2914747

Information

• Patent Grant
• 2914747

• References
• Source

• Patent Number

  2,914,747

• Date Filed

  Not available

• Date Issued

  Tuesday, November 24, 1959
  65 years ago

• CPC

  • H04Q3/525 - using tubes in the switching stages

• US Classifications

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