2874493

Information

• Patent Grant
• 2874493

• References
• Source

• Patent Number

  2,874,493

• Date Filed

  Not available

• Date Issued

  Tuesday, February 24, 1959
  66 years ago

• CPC

  • B61L29/023 - Special gates
  • B61L29/04 - Gates for level crossings
  • E01F13/06 - by swinging into open position about a vertical or horizontal axis parallel to the road direction

• US Classifications

  • 049 - Movable or removable closures
  • 172 - Earth working
  • 246 - Railway switches and signals
  • D10 - Measuring, testing, or signalling instruments