1218191

Information

• Patent Grant
• 1218191

• References
• Source

• Patent Number

  1,218,191

• Date Filed

  Not available

• Date Issued

  Tuesday, March 6, 1917
  107 years ago

• CPC

  • B23D37/16 - for broaching helical grooves
  • Y10T409/402975 - Arcuate groove in cylindrical surface
  • Y10T409/406825 - and rotary motion to cutter

• US Classifications

  • 409 - Gear cutting, milling, or planing