2301004

Information

• Patent Grant
• 2301004

• References
• Source

• Patent Number

  2,301,004

• Date Filed

  Not available

• Date Issued

  Tuesday, November 3, 1942
  82 years ago

• CPC

  • G08G1/07 - Controlling traffic signals
  • Y10T307/375 - Different frequencies

• US Classifications

  • 318 - Electricity: motive power systems
  • 307 - Electrical transmission or interconnection systems
  • 340 - Communications: electrical