3634219

Information

• Patent Grant
• 3634219

• References
• Source

• Patent Number

  3,634,219

• Date Filed

  Not available

• Date Issued

  Tuesday, January 11, 1972
  52 years ago

• CPC

  • G02B1/12 - by surface treatment
  • C03C23/003 - by X-rays
  • C03C23/0035 - by gamma-rays
  • C03C23/0045 - by neutrons

• US Classifications

  • 204 - Chemistry: electrical and wave energy
  • 065 - Glass manufacturing
  • 351 - Optics: eye examining, vision testing and correcting
  • 359 - Optical: systems and elements
  • 501 - Compositions: ceramic