Semiconductors; Sirens; Telescopes; Air analysis apparatus; Data processing apparatus; Distance measuring apparatus; Downloadable computer programs for use in database management, use as a spread sheet, word processing; Electric installations for the remote control of industrial operations; Electronic detectors for observing and measuring the infrared spectrum, namely, infrared detectors; Gas testing instruments; Gasometers; Global positioning system (GPS) apparatus; Length measuring gauges; ...

Air analysis apparatus; Apparatus for testing gas, liquids and solids; Central processing units (CPU); Distance measuring apparatus; Electrical inductors; Electronic semi-conductors; Gas sensors for measuring gas concentration; Gas testing instruments; Gas meters; Personal stereos; Semi-conductors; Smoke alarms; Smoke detectors; Tape recorders; Transformers