3144225

Information

• Patent Grant
• 3144225

• References
• Source

• Patent Number

  3,144,225

• Date Filed

  Not available

• Date Issued

  Tuesday, August 11, 1964
  60 years ago

• CPC

  • B61L1/161 - characterised by the counting methods
  • B61L1/167 - Circuit details

• US Classifications

  • 246 - Railway switches and signals