3814872

Information

• Patent Grant
• 3814872

• References
• Source

• Patent Number

  3,814,872

• Date Filed

  Not available

• Date Issued

  Tuesday, June 4, 1974
  50 years ago

• CPC

  • H01H13/365 - having a symmetrical configuration
  • G03B9/58 - Means for varying duration of "open" period of shutter

• US Classifications

  • 200 - Electricity: circuit makers and breakers
  • 396 - Photography