3528261

Information

• Patent Grant
• 3528261

• References
• Source

• Patent Number

  3,528,261

• Date Filed

  Not available

• Date Issued

  Tuesday, September 15, 1970
  54 years ago

• CPC

  • A44C17/003 - Doublet stones

• US Classifications

  • 063 - Jewelry
  • 065 - Glass manufacturing
  • 359 - Optical: systems and elements