3608400

Information

• Patent Grant
• 3608400

• References
• Source

• Patent Number

  3,608,400

• Date Filed

  Not available

• Date Issued

  Tuesday, September 28, 1971
  53 years ago

• CPC

  • B23B31/005 - Cylindrical shanks of tools
  • B21D1/14 - Straightening frame structures
  • B21D11/14 - Twisting
  • B21K5/04 - twisting-tools
  • B23B51/02 - Twist drills
  • B23P15/32 - twist-drills
  • B23B2231/028 - Lugs
  • B23B2251/241 - Cross sections of the diameter of the drill
  • Y10T408/89 - Tool or Tool with support
  • Y10T408/907 - including detailed shank
  • Y10T408/9097 - Spiral channel

• US Classifications

  • 076 - Metal tools and implements, making
  • 408 - Cutting by use of rotating axially moving tool