3331455

Information

• Patent Grant
• 3331455

• References
• Source

• Patent Number

  3,331,455

• Date Filed

  Not available

• Date Issued

  Tuesday, July 18, 1967
  57 years ago

• CPC

  • B23B51/0406 - Drills with a tubular body
  • B23B51/0473 - details about the connection between the driven shaft and the tubular cutting part
  • B23B2240/08 - Brazed connections
  • B23B2251/02 - Connections between shanks and removable cutting heads
  • B23B2251/50 - Drilling tools comprising cutting inserts
  • B23B2260/082 - Holes

• US Classifications

  • 175 - Boring or penetrating the earth