3584949

Information

• Patent Grant
• 3584949

• References
• Source

• Patent Number

  3,584,949

• Date Filed

  Not available

• Date Issued

  Tuesday, June 15, 1971
  53 years ago

• CPC

  • G03B27/522 - Projection optics
  • G03B21/20 - Lamp houses
  • G03B27/70 - Reflectors in printing beam
  • G03B27/72 - Controlling or varying light intensity, spectral composition, or exposure time in photographic printing apparatus
  • G11C13/041 - using photochromic storage elements

• US Classifications

  • 355 - Photocopying
  • 353 - Optics: image projectors