1477855

Information

• Patent Grant
• 1477855

• References
• Source

• Patent Number

  1,477,855

• Date Filed

  Not available

• Date Issued

  Tuesday, December 18, 1923
  101 years ago

• CPC

  • E21B17/1078 - Stabilisers or centralisers for casing, tubing or drill pipes
  • E21B17/00 - Drilling rods or pipes Flexible drill strings Kellies Drill collars Sucker rods; Cables Casings Tubings
  • E21B17/0426 - with a threaded cylindrical portion
  • Y10S403/02 - Metal treatment
  • Y10T279/17948 - Threaded sleeve
  • Y10T428/12965 - Both containing 0.01-1.7% carbon [i.e., steel]

• US Classifications

  • 175 - Boring or penetrating the earth
  • 279 - Chucks or sockets
  • 403 - Joints and connections
  • 428 - Stock material or miscellaneous articles