3812500

Information

• Patent Grant
• 3812500

• References
• Source

• Patent Number

  3,812,500

• Date Filed

  Not available

• Date Issued

  Tuesday, May 21, 1974
  50 years ago

• CPC

  • G03B15/0452 - Electrical ignition means connected to the shutter
  • G03B7/083 - for control of exposure time
  • G03B7/16 - in accordance with both the intensity of the flash source and the distance of the flash source from the object
  • G03B9/70 - with flash-synchronising contacts

• US Classifications

  • 396 - Photography