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US3845301A
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Apparatus and methods employing ion analysis apparatus with enhanced gas flow
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US3742213A
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Apparatus and methods for detecting, separating, concentrating and measuring electronegative trace vapors
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US3697749A
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Apparatus and methods for enhancing the detection of small-source plumes from moving aircraft
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US3626179A
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High temperature method and apparatus for analyzing gaseous samples
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GB1306534A
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Method and apparatus for producing readout from gas or liquid chromatograph
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GB1274634A
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Apparatus and methods for separating, concentrating, detecting, and measuring trace gases
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US3626178A
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Gas or liquid chromatograph with detector employing ion-molecule reactions and ion drift
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US3596088A
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Time-of-flight mass separator having a flowing gas stream perpendicular to an ion drift field for increased resolution
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US3668385A
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Apparatus and methods for improving measurements performed upon gaseous samples by reducing sample contamination
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US3697748A
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Plasma chromatograph with internally heated inlet system
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US3639757A
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Apparatus and methods employing ion-molecule reactions in batch analysis of volatile materials
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US4195513A
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Methods of monitoring the presence or movements of humans
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US3626181A
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Gas detecting apparatus with means to record detection signals in superposition for improved signal-to-noise ratios
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US3526137A
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Sampling apparatus for use with chemical processes and the like
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US3629574A
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Apparatus and methods for separating electrons from ions
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US3668383A
|
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Apparatus and methods for separating, detecting, and measuring trace gases
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US3626180A
|
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Apparatus and methods for separating, detecting, and measuring trace gases with enhanced resolution
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US3668382A
|
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Separation and detection of trace substances in gaseous samples containing moisture by diluting with dry air
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US3624389A
|
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Time of flight mass spectrometer having a flowing gas stream perpendicular to the ion drift field for increased resolution
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US3699333A
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Apparatus and methods for separating, concentrating, detecting, and measuring trace gases
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