3680186

Information

• Patent Grant
• 3680186

• References
• Source

• Patent Number

  3,680,186

• Date Filed

  Not available

• Date Issued

  Tuesday, August 1, 1972
  53 years ago

• CPC

  • E21B7/16 - Applying separate balls or pellets by the pressure of the drill, so-called shot-drilling
  • B02C19/00 - Other disintegrating devices or methods
  • B24C5/06 - Impeller wheels Rotor blades therefor
  • Y10T29/477 - of gear article

• US Classifications

  • 029 - Metal working
  • 451 - Abrading