3615771

Information

• Patent Grant
• 3615771

• References
• Source

• Patent Number

  3,615,771

• Date Filed

  Not available

• Date Issued

  Tuesday, October 26, 1971
  53 years ago

• CPC

  • C03C4/065 - for silver-halide free photochromic glass
  • C03C3/064 - containing boron

• US Classifications

  • 501 - Compositions: ceramic
  • 065 - Glass manufacturing