3706145

Information

• Patent Grant
• 3706145

• References
• Source

• Patent Number

  3,706,145

• Date Filed

  Not available

• Date Issued

  Tuesday, December 19, 1972
  52 years ago

• CPC

  • E01B27/026 - by means of driven tools
  • E01B27/025 - by means of non-driven tools

• US Classifications

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