2794117

Information

• Patent Grant
• 2794117

• References
• Source

• Patent Number

  2,794,117

• Date Filed

  Not available

• Date Issued

  Tuesday, May 28, 1957
  67 years ago

• CPC

  • B61L23/12 - partly operated by train

• US Classifications

  • 246 - Railway switches and signals
  • 340 - Communications: electrical