1687252

Information

• Patent Grant
• 1687252

• References
• Source

• Patent Number

  1,687,252

• Date Filed

  Not available

• Date Issued

  Tuesday, October 9, 1928
  96 years ago

• CPC

  • B24B19/02 - for grinding grooves
  • Y10S29/055 - with cutter drive

• US Classifications

  • 451 - Abrading
  • 029 - Metal working