3205767

Information

• Patent Grant
• 3205767

• References
• Source

• Patent Number

  3,205,767

• Date Filed

  Not available

• Date Issued

  Tuesday, September 14, 1965
  59 years ago

• CPC

  • G01J1/14 - using comparison with a surface of graded brightness
  • G02B21/0096 - with photometer devices
  • G03B7/02 - Control effected by setting a graduated member on the camera in accordance with indication or reading afforded by a light meter, which may be either separate from or built into camera body
  • G03B7/0807 - Control circuits
  • G03B27/80 - in dependence upon automatic analysis of the original
  • G03C5/04 - Photo-taking processes

• US Classifications

  • 396 - Photography
  • 355 - Photocopying
  • 359 - Optical: systems and elements