306723

Information

• Patent Grant
• 306723

• References
• Source

• Patent Number

  306,723

• Date Filed

  Not available

• Date Issued

  Tuesday, October 21, 1884
  140 years ago

• CPC

  • B23B5/40 - for turning spherical surfaces inside or outside
  • Y10T82/17 - Lathe for pulley

• US Classifications

  • 082 - Turning
  • 142 - Wood turning
  • 451 - Abrading