(Based on Use in Commerce) (Based on 44(e)) Multichannel electronic analyzers for leak detection and classification in compressed air, gas and vacuum systems, condition monitoring of machinery, steam trap inspection, valve inspection, tightness testing and detection of partial discharges; Detectors for electric meters, namely, detectors for leak detection and classification in compressed air, gas and vacuum systems, condition monitoring of machinery, steam trap inspection, valve inspection, t...