2675739

Information

• Patent Grant
• 2675739

• References
• Source

• Patent Number

  2,675,739

• Date Filed

  Not available

• Date Issued

  Tuesday, April 20, 1954
  70 years ago

• CPC

  • E01F9/658 - characterised by means for fixing
  • E01F9/654 - in the form of three-dimensional bodies

• US Classifications

  • 359 - Optical: systems and elements
  • 116 - Signals and indicators
  • 404 - Road structure, process, or apparatus