3684033

Information

• Patent Grant
• 3684033

• References
• Source

• Patent Number

  3,684,033

• Date Filed

  Not available

• Date Issued

  Tuesday, August 15, 1972
  52 years ago

• CPC

  • E21B6/00 - Drives for combined percussion and rotary drilling
  • B25D17/11 - Arrangements of noise-damping means
  • E21C3/24 - directly by air, steam, or gas pressure

• US Classifications

  • 173 - Tool driving or impacting