3178999

Information

• Patent Grant
• 3178999

• References
• Source

• Patent Number

  3,178,999

• Date Filed

  Not available

• Date Issued

  Tuesday, April 20, 1965
  59 years ago

• CPC

  • H03K17/288 - in tube switches
  • G03B27/72 - Controlling or varying light intensity, spectral composition, or exposure time in photographic printing apparatus

• US Classifications

  • 355 - Photocopying
  • 250 - Radiant energy