2025100

Information

• Patent Grant
• 2025100

• References
• Source

• Patent Number

  2,025,100

• Date Filed

  Not available

• Date Issued

  Tuesday, December 24, 1935
  89 years ago

• CPC

  • E21B17/07 - Telescoping joints for varying drill string lengths Shock absorbers
  • E21B11/02 - Boring rams
  • E21B31/107 - using impact means for releasing stuck parts

• US Classifications

  • 464 - Rotary shafts, gudgeons, housings, and flexible couplings for rotary shafts
  • 175 - Boring or penetrating the earth