3903973

Information

• Patent Grant
• 3903973

• References
• Source

• Patent Number

  3,903,973

• Date Filed

  Not available

• Date Issued

  Tuesday, September 9, 1975
  49 years ago

• CPC

  • F16H43/00 - Other fluid gearing
  • E21B3/02 - Surface drives for rotary drilling
  • E21B7/24 - Drilling using vibrating or oscillating means

• US Classifications

  • 173 - Tool driving or impacting