1397697

Information

• Patent Grant
• 1397697

• References
• Source

• Patent Number

  1,397,697

• Date Filed

  Not available

• Date Issued

  Tuesday, November 22, 1921
  103 years ago

• CPC

  • B23F21/18 - Taper hobs
  • Y10T407/1705 - Face mill gear cutting tool
  • Y10T407/1715 - Hob

• US Classifications

  • 407 - Cutters, for shaping