2689505

Information

• Patent Grant
• 2689505

• References
• Source

• Patent Number

  2,689,505

• Date Filed

  Not available

• Date Issued

  Tuesday, September 21, 1954
  70 years ago

• CPC

  • B44B1/04 - having devices for changing
  • B23Q35/20 - with special means for varying the ratio of reproduction
  • Y10T409/3014 - Pivotally supported for vertical movement

• US Classifications

  • 409 - Gear cutting, milling, or planing
  • 033 - Geometrical instruments