3423886

Information

• Patent Grant
• 3423886

• References
• Source

• Patent Number

  3,423,886

• Date Filed

  Not available

• Date Issued

  Tuesday, January 28, 1969
  55 years ago

• CPC

  • B24B9/142 - for contact lenses
  • Y10T82/30 - Miscellaneous

• US Classifications

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