3408429

Information

• Patent Grant
• 3408429

• References
• Source

• Patent Number

  3,408,429

• Date Filed

  Not available

• Date Issued

  Tuesday, October 29, 1968
  56 years ago

• CPC

  • B29C41/045 - the axis being placed vertically
  • B29C41/383 - with means for cutting the article
  • B29D11/00057 - characterised by the shape or surface condition of the edge
  • B29D11/00115 - made by rotational casting
  • B29D11/00471 - made by rotational casting
  • B29C41/04 - Rotational or centrifugal casting
  • B29L2011/0041 - Contact lenses
  • B29L2031/76 - Office equipment or accessories
  • Y10S425/808 - Lens mold

• US Classifications

  • 264 - Plastic and nonmetallic article shaping or treating: processes
  • 065 - Glass manufacturing
  • 351 - Optics: eye examining, vision testing and correcting
  • 425 - Plastic article or earthenware shaping or treating: apparatus