2213498

Information

• Patent Grant
• 2213498

• References
• Source

• Patent Number

  2,213,498

• Date Filed

  Not available

• Date Issued

  Tuesday, September 3, 1940
  84 years ago

• CPC

  • B23C5/20 - with removable cutter bits or teeth or cutting inserts
  • B23C2215/64 - Well pipe windows

• US Classifications

  • 166 - Wells
  • 175 - Boring or penetrating the earth