3645771

Information

• Patent Grant
• 3645771

• References
• Source

• Patent Number

  3,645,771

• Date Filed

  Not available

• Date Issued

  Tuesday, February 29, 1972
  54 years ago

• CPC

  • C03C17/3494 - comprising other salts
  • C03C17/3411 - with at least two coatings of inorganic materials
  • C03C17/3452 - comprising a fluoride
  • C03C17/347 - comprising a sulfide or oxysulfide
  • C23C14/547 - using optical methods

• US Classifications

  • 427 - Coating processes
  • 118 - Coating apparatus
  • 359 - Optical: systems and elements