1789274

Information

• Patent Grant
• 1789274

• References
• Source

• Patent Number

  1,789,274

• Date Filed

  Not available

• Date Issued

  Tuesday, January 13, 1931
  94 years ago

• CPC

  • B61L3/106 - with mechanically controlled electrical switch on the vehicle

• US Classifications

  • 246 - Railway switches and signals