3661438

Information

• Patent Grant
• 3661438

• References
• Source

• Patent Number

  3,661,438

• Date Filed

  Not available

• Date Issued

  Tuesday, May 9, 1972
  52 years ago

• CPC

  • G11C13/045 - using photochromic storage elements
  • C03C2217/213 - SiO2
  • C03C2218/113 - by sol-gel processes

• US Classifications

  • 365 - Static information storage and retrieval
  • 359 - Optical: systems and elements