1889217

Information

• Patent Grant
• 1889217

• References
• Source

• Patent Number

  1,889,217

• Date Filed

  Not available

• Date Issued

  Tuesday, November 29, 1932
  92 years ago

• CPC

  • E21B10/627 - with plural detachable cutting elements
  • Y10T279/17 - Socket type
  • Y10T279/17111 - Fluid-conduit drill holding
  • Y10T279/17905 - Bottomless

• US Classifications

  • 279 - Chucks or sockets
  • 175 - Boring or penetrating the earth