1348674

Information

• Patent Grant
• 1348674

• References
• Source

• Patent Number

  1,348,674

• Date Filed

  Not available

• Date Issued

  Tuesday, August 3, 1920
  104 years ago

• CPC

  • B23B5/365 - for toroidal surfaces
  • Y10T29/4927 - Cylinder, cylinder head or engine valve sleeve making
  • Y10T29/49893 - Peripheral joining of opposed mirror image parts to form a hollow body
  • Y10T409/304424 - Means for internal milling

• US Classifications

  • 029 - Metal working
  • 409 - Gear cutting, milling, or planing