3809951

Information

• Patent Grant
• 3809951

• References
• Source

• Patent Number

  3,809,951

• Date Filed

  Not available

• Date Issued

  Tuesday, May 7, 1974
  50 years ago

• CPC

  • G03B15/05 - Combinations of cameras with electronic flash apparatus Electronic flash units
  • G03B7/16 - in accordance with both the intensity of the flash source and the distance of the flash source from the object
  • G03B15/03 - Combinations of cameras with lighting apparatus Flash units
  • G03B15/0452 - Electrical ignition means connected to the shutter
  • H05B41/325 - by measuring the incident light
  • G03B2215/0528 - movable reflector

• US Classifications

  • 315 - Electric lamp and discharge devices: systems