2306404

Information

• Patent Grant
• 2306404

• References
• Source

• Patent Number

  2,306,404

• Date Filed

  Not available

• Date Issued

  Tuesday, December 29, 1942
  83 years ago

• CPC

  • H04L25/207 - using electromagnetic switches

• US Classifications

  • 178 - Telegraphy
  • 315 - Electric lamp and discharge devices: systems
  • 327 - Miscellaneous active electrical nonlinear devices, circuits, and systems