3879088

Information

• Patent Grant
• 3879088

• References
• Source

• Patent Number

  3,879,088

• Date Filed

  Not available

• Date Issued

  Tuesday, April 22, 1975
  49 years ago

• CPC

  • E21C27/22 - by rotary drills with breaking-down means, e.g. wedge-shaped drills
  • E21C29/26 - with means for adjustably positioning the machine on the truck

• US Classifications

  • 299 - Mining or in situ disintegration of hard material
  • 198 - Conveyors: power-driven
  • 405 - Hydraulic and earth engineering