3876973

Information

• Patent Grant
• 3876973

• References
• Source

• Patent Number

  3,876,973

• Date Filed

  Not available

• Date Issued

  Tuesday, April 8, 1975
  50 years ago

• CPC

  • E01F13/10 - Vehicle barriers specially adapted for allowing passage in one direction only
  • G08G1/075 - Ramp control

• US Classifications

  • 340 - Communications: electrical
  • 049 - Movable or removable closures