3131238

Information

• Patent Grant
• 3131238

• References
• Source

• Patent Number

  3,131,238

• Date Filed

  Not available

• Date Issued

  Tuesday, April 28, 1964
  60 years ago

• CPC

  • G02B1/02 - made of crystals
  • Y10S264/25 - Metallic oxide

• US Classifications

  • 264 - Plastic and nonmetallic article shaping or treating: processes
  • 423 - Chemistry of inorganic compounds