3915580

Information

• Patent Grant
• 3915580

• References
• Source

• Patent Number

  3,915,580

• Date Filed

  Not available

• Date Issued

  Tuesday, October 28, 1975
  49 years ago

• CPC

  • E01C1/02 - Crossings, junctions or interconnections between roads on the same level
  • G08G1/00 - Traffic control systems for road vehicles

• US Classifications

  • 404 - Road structure, process, or apparatus