2587972

Information

• Patent Grant
• 2587972

• References
• Source

• Patent Number

  2,587,972

• Date Filed

  Not available

• Date Issued

  Tuesday, March 4, 1952
  73 years ago

• CPC

  • A44C17/008 - Glass stones

• US Classifications

  • 063 - Jewelry
  • 359 - Optical: systems and elements