3273289

Information

• Patent Grant
• 3273289

• References
• Source

• Patent Number

  3,273,289

• Date Filed

  Not available

• Date Issued

  Tuesday, September 20, 1966
  58 years ago

• CPC

  • B24B13/065 - using a template

• US Classifications

  • 451 - Abrading
  • 351 - Optics: eye examining, vision testing and correcting