3251991

Information

• Patent Grant
• 3251991

• References
• Source

• Patent Number

  3,251,991

• Date Filed

  Not available

• Date Issued

  Tuesday, May 17, 1966
  58 years ago

• CPC

  • B61K7/12 - electrically controlled

• US Classifications

  • 246 - Railway switches and signals
  • 104 - Railways