3774347

Information

• Patent Grant
• 3774347

• References
• Source

• Patent Number

  3,774,347

• Date Filed

  Not available

• Date Issued

  Tuesday, November 27, 1973
  51 years ago

• CPC

  • B24B17/02 - involving mechanical transmission means only
  • B24B9/163 - of gem stones or convex surfaces, cabochons

• US Classifications

  • 451 - Abrading