IC 009. US 021 023 026 036 038. G & S: Electric and electronic monitoring, regulating, and control apparatus and devices for use with exhaust gas catalytic converters, namely, electronic monitors to record, report, and control temperature and composition of exhaust, and parts therefor; Electrical controllers to control the heating of exhaust gas catalytic converters, and parts therefor
IC 012. US 019 021 023 031 035 044. G & S: Internal combustion engines for land vehicles
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