1709888

Information

• Patent Grant
• 1709888

• References
• Source

• Patent Number

  1,709,888

• Date Filed

  Not available

• Date Issued

  Tuesday, April 23, 1929
  95 years ago

• CPC

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

• US Classifications

  • 246 - Railway switches and signals