2055145

Information

• Patent Grant
• 2055145

• References
• Source

• Patent Number

  2,055,145

• Date Filed

  Not available

• Date Issued

  Tuesday, September 22, 1936
  90 years ago

• CPC

  • E21B10/42 - Rotary drag type drill bits with teeth, blades or like cutting elements
  • Y10T279/17837 - Plural bolt

• US Classifications

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