3703425

Information

• Patent Grant
• 3703425

• References
• Source

• Patent Number

  3,703,425

• Date Filed

  Not available

• Date Issued

  Tuesday, November 21, 1972
  52 years ago

• CPC

  • B32B17/1077 - containing polyurethane
  • B29C39/003 - characterised by the choice of material
  • B29C39/126 - by casting between two preformed layers
  • B29C39/32 - with joints or the like for making the mould impervious
  • B29C39/42 - Casting under special conditions
  • B32B17/10917 - between two pre-positioned glass layers
  • B29K2075/00 - Use of PU
  • B29K2995/0026 - Transparent
  • B29L2031/7782 - Glazing
  • Y10T428/31601 - Quartz or glass

• US Classifications

  • 264 - Plastic and nonmetallic article shaping or treating: processes
  • 156 - Adhesive bonding and miscellaneous chemical manufacture
  • 351 - Optics: eye examining, vision testing and correcting
  • 428 - Stock material or miscellaneous articles