2644985

Information

• Patent Grant
• 2644985

• References
• Source

• Patent Number

  2,644,985

• Date Filed

  Not available

• Date Issued

  Tuesday, July 14, 1953
  71 years ago

• CPC

  • B29C43/021 - characterised by the shape of the surface
  • B29D11/00086 - methods for matching the anterior surface of the contact lens to the shape of an eyeball
  • B29L2011/0016 - Lenses
  • Y10S359/90 - Methods
  • Y10S425/808 - Lens mold

• US Classifications

  • 264 - Plastic and nonmetallic article shaping or treating: processes
  • 351 - Optics: eye examining, vision testing and correcting
  • 359 - Optical: systems and elements
  • 425 - Plastic article or earthenware shaping or treating: apparatus