2157471

Information

• Patent Grant
• 2157471

• References
• Source

• Patent Number

  2,157,471

• Date Filed

  Not available

• Date Issued

  Tuesday, May 9, 1939
  85 years ago

• CPC

  • B23Q35/12 - involving electrical means
  • B23Q2735/067 - with rotation of the workpiece during milling
  • Y10T409/303024 - including simultaneously usable plural tracers or including tracer adapted to simultaneously use plural templets
  • Y10T409/303248 - with provision for circumferential relative movement of cutter and work

• US Classifications

  • 409 - Gear cutting, milling, or planing
  • 060 - Power plants