1792294

Information

• Patent Grant
• 1792294

• References
• Source

• Patent Number

  1,792,294

• Date Filed

  Not available

• Date Issued

  Tuesday, February 10, 1931
  94 years ago

• CPC

  • B61L29/224 - using rail contacts
  • E01F13/04 - movable to allow or prevent passage

• US Classifications

  • 049 - Movable or removable closures
  • 246 - Railway switches and signals