3858226

Information

• Patent Grant
• 3858226

• References
• Source

• Patent Number

  3,858,226

• Date Filed

  Not available

• Date Issued

  Tuesday, December 31, 1974
  50 years ago

• CPC

  • G03B7/089 - for storage of exposure value in mirror reflex cameras

• US Classifications

  • 396 - Photography