3899789

Information

• Patent Grant
• 3899789

• References
• Source

• Patent Number

  3,899,789

• Date Filed

  Not available

• Date Issued

  Tuesday, August 12, 1975
  49 years ago

• CPC

  • G03B19/12 - Reflex cameras with single objective and a movable reflector or a partly-transmitting mirror
  • G03B7/085 - for control of aperture
  • G03B7/089 - for storage of exposure value in mirror reflex cameras

• US Classifications

  • 396 - Photography