1673841

Information

• Patent Grant
• 1673841

• References
• Source

• Patent Number

  1,673,841

• Date Filed

  Not available

• Date Issued

  Tuesday, June 19, 1928
  96 years ago

• CPC

  • B61L29/026 - Preventing access by means of obstacles raising across the route

• US Classifications

  • 246 - Railway switches and signals