2350481

Information

• Patent Grant
• 2350481

• References
• Source

• Patent Number

  2,350,481

• Date Filed

  Not available

• Date Issued

  Tuesday, June 6, 1944
  81 years ago

• CPC

  • H04L15/06 - with a restricted number of keys

• US Classifications

  • 178 - Telegraphy
  • 200 - Electricity: circuit makers and breakers