2863993

Information

• Patent Grant
• 2863993

• References
• Source

• Patent Number

  2,863,993

• Date Filed

  Not available

• Date Issued

  Tuesday, December 9, 1958
  66 years ago

• CPC

  • B61L1/185 - Use of direct current
  • B61L29/24 - Means for warning road traffic that a gate is closed or closing, or that rail traffic is approaching

• US Classifications

  • 246 - Railway switches and signals