2772871

Information

• Patent Grant
• 2772871

• References
• Source

• Patent Number

  2,772,871

• Date Filed

  Not available

• Date Issued

  Tuesday, December 4, 1956
  68 years ago

• CPC

  • E21D11/03 - using timber- setting machines

• US Classifications

  • 299 - Mining or in situ disintegration of hard material
  • 254 - Implements or apparatus for applying pushing or pulling force
  • 405 - Hydraulic and earth engineering
  • 414 - Material or article handling