3624936

Information

• Patent Grant
• 3624936

• References
• Source

• Patent Number

  3,624,936

• Date Filed

  Not available

• Date Issued

  Tuesday, December 7, 1971
  53 years ago

• CPC

  • E01B27/10 - without taking-up track
  • E01B27/025 - by means of non-driven tools

• US Classifications

  • 037 - Excavating
  • 015 - Brushing, scrubbing, and general cleaning
  • 104 - Railways
  • 172 - Earth working