3594572

Information

• Patent Grant
• 3594572

• References
• Source

• Patent Number

  3,594,572

• Date Filed

  Not available

• Date Issued

  Tuesday, July 20, 1971
  53 years ago

• CPC

  • B61L3/065 - controlling optically

• US Classifications

  • 246 - Railway switches and signals
  • 235 - Registers