3846013

Information

• Patent Grant
• 3846013

• References
• Source

• Patent Number

  3,846,013

• Date Filed

  Not available

• Date Issued

  Tuesday, November 5, 1974
  50 years ago

• CPC

  • B29D11/00528 - Consisting of two mould halves joined by an annular gasket
  • B29C33/0038 - with sealing means or the like
  • B29D11/00413 - made by moulding between two mould parts which are not in direct contact with one another
  • B29D11/0073 - Optical laminates
  • G02B1/041 - Lenses
  • G02C7/04 - Contact lenses for the eyes
  • B29L2031/7602 - Maps

• US Classifications

  • 359 - Optical: systems and elements
  • 351 - Optics: eye examining, vision testing and correcting