3448261

Information

• Patent Grant
• 3448261

• References
• Source

• Patent Number

  3,448,261

• Date Filed

  Not available

• Date Issued

  Tuesday, June 3, 1969
  55 years ago

• CPC

  • G08B17/113 - Constructional details
  • G01N27/62 - by investigating the ionisation of gases by investigating electric discharges
  • G01N27/64 - using wave or particle radiation to ionise a gas
  • G01T1/185 - with ionisation chamber arrangements
  • 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
  • H01J41/08 - with ionisation by means of radioactive substances

• US Classifications

  • 324 - Electricity: measuring and testing
  • 250 - Radiant energy