3543236

Information

• Patent Grant
• 3543236

• References
• Source

• Patent Number

  3,543,236

• Date Filed

  Not available

• Date Issued

  Tuesday, November 24, 1970
  54 years ago

• CPC

  • H02H3/325 - involving voltage comparison

• US Classifications

  • 714 - Error detection/correction and fault detection/recovery
  • 246 - Railway switches and signals