2120037

Information

• Patent Grant
• 2120037

• References
• Source

• Patent Number

  2,120,037

• Date Filed

  Not available

• Date Issued

  Tuesday, June 7, 1938
  86 years ago

• CPC

  • B61L1/184 - Use of additional conductors for examining leakages between rails

• US Classifications

  • 335 - Electricity: magnetically operated switches, magnets, and electromagnets
  • 246 - Railway switches and signals
  • 361 - Electricity: electrical systems and devices