3255026

Information

• Patent Grant
• 3255026

• References
• Source

• Patent Number

  3,255,026

• Date Filed

  Not available

• Date Issued

  Tuesday, June 7, 1966
  58 years ago

• CPC

  • C03C3/076 - with 40% to 90% silica, by weight
  • C03C4/065 - for silver-halide free photochromic glass

• US Classifications

  • 501 - Compositions: ceramic
  • 351 - Optics: eye examining, vision testing and correcting
  • 359 - Optical: systems and elements