3509808

Information

• Patent Grant
• 3509808

• References
• Source

• Patent Number

  3,509,808

• Date Filed

  Not available

• Date Issued

  Tuesday, May 5, 1970
  54 years ago

• CPC

  • G03B7/16 - in accordance with both the intensity of the flash source and the distance of the flash source from the object
  • G03B7/06 - by a follow-up movement of an associated reference mark to the pointer
  • G03B15/0452 - Electrical ignition means connected to the shutter

• US Classifications

  • 396 - Photography