2716717

Information

• Patent Grant
• 2716717

• References
• Source

• Patent Number

  2,716,717

• Date Filed

  Not available

• Date Issued

  Tuesday, August 30, 1955
  69 years ago

• CPC

  • G03B27/72 - Controlling or varying light intensity, spectral composition, or exposure time in photographic printing apparatus
  • G03B21/2026 - Gas discharge type light sources
  • G03B21/206 - Control of light source other than position or intensity
  • H05B31/0036 - for projection, copying or stage lighting
  • H05B31/0081 - Controlling of arc lamps

• US Classifications

  • 314 - Electric lamp and discharge devices: consumable electrodes
  • 250 - Radiant energy
  • 315 - Electric lamp and discharge devices: systems
  • 362 - Illumination