2201561

Information

• Patent Grant
• 2201561

• References
• Source

• Patent Number

  2,201,561

• Date Filed

  Not available

• Date Issued

  Tuesday, May 21, 1940
  85 years ago

• CPC

  • H04L12/04 - Switchboards
  • H04L15/34 - Apparatus for recording received coded signals after translation

• US Classifications

  • 335 - Electricity: magnetically operated switches, magnets, and electromagnets
  • 340 - Communications: electrical