3445944

Information

• Patent Grant
• 3445944

• References
• Source

• Patent Number

  3,445,944

• Date Filed

  Not available

• Date Issued

  Tuesday, May 27, 1969
  55 years ago

• CPC

  • E01B27/025 - by means of non-driven tools
  • E02F5/22 - for making embankments for back-filling

• US Classifications

  • 037 - Excavating
  • 172 - Earth working
  • 404 - Road structure, process, or apparatus