1438389

Information

• Patent Grant
• 1438389

• References
• Source

• Patent Number

  1,438,389

• Date Filed

  Not available

• Date Issued

  Tuesday, December 12, 1922
  101 years ago

• CPC

  • B23D79/00 - Methods, machines, or devices not covered elsewhere, for working metal by removal of material
  • Y10T409/503608 - Circumferential surface

• US Classifications

  • 409 - Gear cutting, milling, or planing