3295618

Information

• Patent Grant
• 3295618

• References
• Source

• Patent Number

  3,295,618

• Date Filed

  Not available

• Date Issued

  Tuesday, January 3, 1967
  58 years ago

• CPC

  • E21B10/02 - Core bits
  • E21B10/003 - with cutting edges facing in opposite axial directions
  • B23B2251/247 - Drilling tools having a working portion at both ends of the shank

• US Classifications

  • 175 - Boring or penetrating the earth