2145763

Information

• Patent Grant
• 2145763

• References
• Source

• Patent Number

  2,145,763

• Date Filed

  Not available

• Date Issued

  Tuesday, January 31, 1939
  86 years ago

• CPC

  • E01B27/107 - along between the tracks only

• US Classifications

  • 171 - Unearthing plants or buried objects
  • 037 - Excavating
  • 209 - Classifying, separating, and assorting solids