3830460

Information

• Patent Grant
• 3830460

• References
• Source

• Patent Number

  3,830,460

• Date Filed

  Not available

• Date Issued

  Tuesday, August 20, 1974
  50 years ago

• CPC

  • B29D11/00519 - Reusable moulds
  • B29C33/405 - Elastomers
  • B29D11/00192 - Demoulding
  • B29D11/00413 - made by moulding between two mould parts which are not in direct contact with one another
  • B29D11/00528 - Consisting of two mould halves joined by an annular gasket
  • B29D11/00855 - Producing cylindrical lenses
  • G02B1/041 - Lenses
  • Y10S425/808 - Lens mold

• US Classifications

  • 249 - Static molds
  • 425 - Plastic article or earthenware shaping or treating: apparatus