U.S. federal trademark · Serial No. 78538595 · Reg. No. 3178116
Apparatus for measuring concentration of fuel vapor, oxygen, nitrogen oxide, hydrocarbon, methane, alcohol and hydrogen in air or gas; apparatus for measuring concentration of fuel vapor, oxygen, nitrogen oxide, hydrocarbon, methane, alcohol and hydrogen, and controlling air/fuel ratio in the exhaust gas from internal combustion engines, boilers, incinerators, gas turbines, generators and fuel cells; knock sensors; pressure sensors; temperature sensors; outdoor air sensors for measuring air quality; load sensors
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