3339318

Information

• Patent Grant
• 3339318

• References
• Source

• Patent Number

  3,339,318

• Date Filed

  Not available

• Date Issued

  Tuesday, September 5, 1967
  56 years ago

• CPC

  • B24B13/0012 - for multifocal lenses
  • G02C7/02 - Lenses Lens systems; Methods of designing lenses

• US Classifications

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