3902909

Information

• Patent Grant
• 3902909

• References
• Source

• Patent Number

  3,902,909

• Date Filed

  Not available

• Date Issued

  Tuesday, September 2, 1975
  49 years ago

• CPC

  • C03C10/0054 - containing PbO, SnO2, B2O3
  • C03C4/065 - for silver-halide free photochromic glass

• US Classifications

  • 501 - Compositions: ceramic
  • 065 - Glass manufacturing