2312176

Information

• Patent Grant
• 2312176

• References
• Source

• Patent Number

  2,312,176

• Date Filed

  Not available

• Date Issued

  Tuesday, February 23, 1943
  82 years ago

• CPC

  • E21B10/02 - Core bits
  • B28D1/041 - with cylinder saws
  • Y10T29/49996 - Successive distinct removal operations
  • Y10T408/26 - with means to condition tool
  • Y10T408/81 - Tool having crystalline cutting edge
  • Y10T408/895 - Having axial, core-receiving central portion
  • Y10T408/909 - Having peripherally spaced cutting edges

• US Classifications

  • 408 - Cutting by use of rotating axially moving tool
  • 029 - Metal working
  • 079 - Button making
  • 175 - Boring or penetrating the earth