3714419

Information

• Patent Grant
• 3714419

• References
• Source

• Patent Number

  3,714,419

• Date Filed

  Not available

• Date Issued

  Tuesday, January 30, 1973
  52 years ago

• CPC

  • B61L3/246 - using coded current

• US Classifications

  • 246 - Railway switches and signals
  • 340 - Communications: electrical