3772993

Information

• Patent Grant
• 3772993

• References
• Source

• Patent Number

  3,772,993

• Date Filed

  Not available

• Date Issued

  Tuesday, November 20, 1973
  51 years ago

• CPC

  • G10K11/20 - Reflecting arrangements
  • E01F8/0035 - with undulated surfaces

• US Classifications

  • 104 - Railways
  • 181 - Acoustics
  • 256 - Fences