2272429

Information

• Patent Grant
• 2272429

• References
• Source

• Patent Number

  2,272,429

• Date Filed

  Not available

• Date Issued

  Tuesday, February 10, 1942
  83 years ago

• CPC

  • E01B27/107 - along between the tracks only

• US Classifications

  • 037 - Excavating
  • 198 - Conveyors: power-driven
  • 299 - Mining or in situ disintegration of hard material