3673742

Information

• Patent Grant
• 3673742

• References
• Source

• Patent Number

  3,673,742

• Date Filed

  Not available

• Date Issued

  Tuesday, July 4, 1972
  52 years ago

• CPC

  • B24B9/163 - of gem stones or convex surfaces, cabochons
  • B24B17/00 - Special adaptations of machines or devices for grinding controlled by patterns, drawings, magnetic tapes or the like Accessories therefor

• US Classifications

  • 451 - Abrading