3820911

Information

• Patent Grant
• 3820911

• References
• Source

• Patent Number

  3,820,911

• Date Filed

  Not available

• Date Issued

  Friday, June 28, 1974
  50 years ago

• CPC

  • E01F15/006 - Lane control by movable lane separating barriers
  • E01F9/40 - Arrangements responsive to adverse atmospheric conditions
  • E01F9/594 - movable for reuse at different locations

• US Classifications

  • 404 - Road structure, process, or apparatus