IC 012. US 019 021 023 031 035 044. G & S: Engines for land vehicles; retrofit and conversion kits for engines for land vehicles, consisting of gas shut off valves, gas pressure regulators, gas flow control valves, gas heaters, gas lines, mixers, air system connectors comprised of flanges, bolts, and mixing tubes, flame arrestors, air cleaners, mounting brackets, computer software for engine control, engine control modules, engine sensor modules, engine sensors, electrical switches, operator interfaces, computer monitors and displays, gauges, transformers, voltage regulators, wiring harnesses
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