2554906

Information

• Patent Grant
• 2554906

• References
• Source

• Patent Number

  2,554,906

• Date Filed

  Not available

• Date Issued

  Tuesday, May 29, 1951
  73 years ago

• CPC

  • B61L3/065 - controlling optically

• US Classifications

  • 246 - Railway switches and signals
  • 361 - Electricity: electrical systems and devices