1971259

Information

• Patent Grant
• 1971259

• References
• Source

• Patent Number

  1,971,259

• Date Filed

  Not available

• Date Issued

  Tuesday, August 21, 1934
  90 years ago

• CPC

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

• US Classifications

  • 303 - Fluid-pressure and analogous brake systems
  • 246 - Railway switches and signals