3213525

Information

• Patent Grant
• 3213525

• References
• Source

• Patent Number

  3,213,525

• Date Filed

  Not available

• Date Issued

  Tuesday, October 26, 1965
  59 years ago

• CPC

  • B23D43/005 - for cutting helical grooves
  • B21C37/207 - with helical guides
  • B23C3/32 - Milling helical grooves
  • B23G1/22 - Machines specially designed for operating on pipes or tubes
  • Y10T29/49384 - Internally finned
  • Y10T29/49385 - Made from unitary workpiece, i.e., no assembly
  • Y10T29/49387 - Boiler making
  • Y10T29/49995 - Shaping one-piece blank by removing material
  • Y10T409/50082 - Process
  • Y10T409/502952 - For rifling

• US Classifications

  • 029 - Metal working
  • 072 - Metal deforming
  • 409 - Gear cutting, milling, or planing