2221638

Information

• Patent Grant
• 2221638

• References
• Source

• Patent Number

  2,221,638

• Date Filed

  Not available

• Date Issued

  Tuesday, November 12, 1940
  84 years ago

• CPC

  • B24B41/00 - Component parts such as frames, beds, carriages, headstocks
  • B24B27/0053 - Radial grinding machines

• US Classifications

  • 451 - Abrading
  • 144 - Woodworking