3820421

Information

• Patent Grant
• 3820421

• References
• Source

• Patent Number

  3,820,421

• Date Filed

  Not available

• Date Issued

  Friday, June 28, 1974
  50 years ago

• CPC

  • B23B5/165 - Workpieces clamped on a bench
  • B23Q1/0036 - one of those parts being a tool
  • Y10T82/22 - Portable lathe for pipe turning
  • Y10T82/2527 - having hollow cutter head

• US Classifications

  • 082 - Turning