2021905

Information

• Patent Grant
• 2021905

• References
• Source

• Patent Number

  2,021,905

• Date Filed

  Not available

• Date Issued

  Tuesday, November 26, 1935
  89 years ago

• CPC

  • E01B7/30 - Jump-over crossings
  • Y10T74/20012 - Multiple controlled elements

• US Classifications

  • 246 - Railway switches and signals
  • 074 - Machine element or mechanism