2115583

Information

• Patent Grant
• 2115583

• References
• Source

• Patent Number

  2,115,583

• Date Filed

  Not available

• Date Issued

  Tuesday, April 26, 1938
  86 years ago

• CPC

  • B61L17/023 - Signalling; Signals with multiple indicating means

• US Classifications

  • 246 - Railway switches and signals
  • 379 - Telephonic communications