3581522

Information

• Patent Grant
• 3581522

• References
• Source

• Patent Number

  3,581,522

• Date Filed

  Not available

• Date Issued

  Tuesday, June 1, 1971
  53 years ago

• CPC

  • B29C70/347 - combined with compressing after the winding of lay-ups having a non-circular cross-section
  • B29C67/04 - Sintering
  • B29C70/14 - oriented
  • B44C5/06 - Natural ornaments imitations thereof
  • B44F9/04 - of stone surfaces
  • B29C2793/009 - after shaping
  • B29K2077/00 - Use of PA, i.e. polyamides
  • B29K2105/25 - Solid
  • B29K2267/00 - Use of polyesters or derivatives thereof as reinforcement
  • B29K2995/0026 - Transparent
  • B29K2995/0031 - Refractive
  • B29L2031/7432 - Gems

• US Classifications

  • 063 - Jewelry
  • 428 - Stock material or miscellaneous articles