3660812

Information

• Patent Grant
• 3660812

• References
• Source

• Patent Number

  3,660,812

• Date Filed

  Not available

• Date Issued

  Tuesday, May 2, 1972
  52 years ago

• CPC

  • G08G1/081 - Plural intersections under common control
  • G06G7/76 - for traffic

• US Classifications

  • 340 - Communications: electrical