3022055

Information

• Patent Grant
• 3022055

• References
• Source

• Patent Number

  3,022,055

• Date Filed

  Not available

• Date Issued

  Tuesday, February 20, 1962
  62 years ago

• CPC

  • B25D11/066 - using centrifugal or rotary impact elements
  • B25D17/02 - Percussive tool bits
  • B25D2250/291 - Tools having three or more parallel bits
  • Y10T29/4528 - with rotary head

• US Classifications

  • 299 - Mining or in situ disintegration of hard material
  • 029 - Metal working
  • 173 - Tool driving or impacting