2092837

Information

• Patent Grant
• 2092837

• References
• Source

• Patent Number

  2,092,837

• Date Filed

  Not available

• Date Issued

  Tuesday, September 14, 1937
  88 years ago

• CPC

  • B61L23/161 - using current of indifferent sorte or a combination of different current types

• US Classifications

  • 246 - Railway switches and signals