1893443

Information

• Patent Grant
• 1893443

• References
• Source

• Patent Number

  1,893,443

• Date Filed

  Not available

• Date Issued

  Tuesday, January 3, 1933
  92 years ago

• CPC

  • B23Q35/109 - with a continuously turning pattern
  • Y10T409/301736 - to make a double curvature foil

• US Classifications

  • 409 - Gear cutting, milling, or planing