274391

Information

• Patent Grant
• 274391

• References
• Source

• Patent Number

  274,391

• Date Filed

  Not available

• Date Issued

  Tuesday, March 20, 1883
  141 years ago

• CPC

  • B23Q35/20 - with special means for varying the ratio of reproduction
  • Y10T409/301288 - and means to move work at work station
  • Y10T409/301512 - including plural cutters

• US Classifications

  • 409 - Gear cutting, milling, or planing