Fuel injection systems for engines; fuel injectors; pumps, namely, fuel pumps for land and marine vehicles for liquid, gaseous and liquified gas fuels; gas vaporizers being machine parts for converting a fuel from liquid to gaseous form; gaseous fuel accumulators as parts of machines or engines; shut off valves being parts of machines; check valves being parts of machines; pressure regulators being parts of machines; fuel rails for engines; engine fuel filters for vehicle engines; hydraulic c...