3640181

Information

• Patent Grant
• 3640181

• References
• Source

• Patent Number

  3,640,181

• Date Filed

  Not available

• Date Issued

  Tuesday, February 8, 1972
  53 years ago

• CPC

  • B23C3/32 - Milling helical grooves
  • Y10T29/1169 - Axis of rotation parallel to support or mandrel
  • Y10T409/300056 - Thread or helix generating

• US Classifications

  • 409 - Gear cutting, milling, or planing
  • 029 - Metal working
  • 470 - Threaded, headed fastener, or washer making: process and apparatus