3552824

Information

• Patent Grant
• 3552824

• References
• Source

• Patent Number

  3,552,824

• Date Filed

  Not available

• Date Issued

  Tuesday, January 5, 1971
  53 years ago

• CPC

  • H03K17/78 - using opto-electronic devices
  • G02B5/23 - Photochromic filters
  • G02F1/0126 - by another light beam
  • G02F1/21 - by interference
  • G02F2001/212 - Mach-Zender type
  • G02F2202/14 - photochromic
  • Y10S348/902 - Photochromic

• US Classifications

  • 359 - Optical: systems and elements
  • 348 - Television