3500051

Information

• Patent Grant
• 3500051

• References
• Source

• Patent Number

  3,500,051

• Date Filed

  Not available

• Date Issued

  Tuesday, March 10, 1970
  55 years ago

• CPC

  • H03K17/288 - in tube switches
  • G01J1/44 - Electric circuits
  • G03B7/083 - for control of exposure time
  • G03B9/58 - Means for varying duration of "open" period of shutter

• US Classifications

  • 250 - Radiant energy
  • 355 - Photocopying