3892999

Information

• Patent Grant
• 3892999

• References
• Source

• Patent Number

  3,892,999

• Date Filed

  Not available

• Date Issued

  Tuesday, July 1, 1975
  49 years ago

• CPC

  • G01J1/429 - applied to measurement of ultraviolet light
  • G01T7/125 - Alarm- or controlling circuits using ionisation chambers, proportional counters or Geiger-Mueller tubes, also functioning as UV detectors
  • G08B17/11 - using an ionisation chamber for detecting smoke or gas

• US Classifications

  • 315 - Electric lamp and discharge devices: systems