1777505

Information

• Patent Grant
• 1777505

• References
• Source

• Patent Number

  1,777,505

• Date Filed

  Not available

• Date Issued

  Tuesday, October 7, 1930
  94 years ago

• CPC

  • E01B7/30 - Jump-over crossings

• US Classifications

  • 246 - Railway switches and signals
  • 220 - Receptacles