3877184

Information

• Patent Grant
• 3877184

• References
• Source

• Patent Number

  3,877,184

• Date Filed

  Not available

• Date Issued

  Tuesday, April 15, 1975
  49 years ago

• CPC

  • B24B9/142 - for contact lenses
  • B29D11/00932 - Combined cutting and grinding thereof

• US Classifications

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