Fire-extinguishing apparatus and movable fire-extinguishing apparatus, fire extinguishers; fire hose nozzles, foam nozzles and associated mixing apparatus; fire-extinguishing apparatus in the nature of foam, and water dischargers and portable fire pumps; fire-extinguishing apparatus in the nature of high expansion foam generators; static fire-extinguishing installations and static fire-extinguishing for ships, consisting primarily of automatic sprinklers, open nozzles, pipelines, extinguishin...