3894129

Information

• Patent Grant
• 3894129

• References
• Source

• Patent Number

  3,894,129

• Date Filed

  Not available

• Date Issued

  Tuesday, July 8, 1975
  49 years ago

• CPC

  • G02B1/043 - Contact lenses
  • B29C33/0038 - with sealing means or the like
  • B29D11/00038 - Production of contact lenses
  • C08F271/02 - on to polymers of monomers containing heterocyclic nitrogen
  • B29L2031/7602 - Maps

• US Classifications

  • 264 - Plastic and nonmetallic article shaping or treating: processes
  • 351 - Optics: eye examining, vision testing and correcting
  • 525 - Synthetic resins or natural rubbers