3687044

Information

• Patent Grant
• 3687044

• References
• Source

• Patent Number

  3,687,044

• Date Filed

  Not available

• Date Issued

  Tuesday, August 29, 1972
  52 years ago

• CPC

  • G03B9/58 - Means for varying duration of "open" period of shutter
  • G03B9/32 - Double blind
  • G03B17/42 - Interlocking between shutter operation and advance of film or change of plate or cut-film

• US Classifications

  • 396 - Photography