U.S. federal trademark · Serial No. 87398296 · Reg. No. 5316395
gas sensors for measuring gas concentration; precision measuring, testing and checking apparatus and instruments for measuring, testing and checking the temperature, pressure, quantity and concentration of gas; optical inspection apparatus for industrial use; [ anti-theft warning apparatus; ] air analysis apparatus; gasometers; gas detectors for detecting the presence of gas; gas testing instruments; gas sensors for measuring gas concentration
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