3293052

Information

• Patent Grant
• 3293052

• References
• Source

• Patent Number

  3,293,052

• Date Filed

  Not available

• Date Issued

  Tuesday, December 20, 1966
  58 years ago

• CPC

  • C03C4/065 - for silver-halide free photochromic glass

• US Classifications

  • 501 - Compositions: ceramic
  • 065 - Glass manufacturing