Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
F25B1/00—Compression machines, plants or systems with non-reversible cycle
Verfahren der Erzeugung von Tieftemperaturteer und Halbkoks durch Verschwelen bituminoeser Stoffe, wie Steinkohle, Braunkohle u. dgl. im Kreislauf eines ueberhitzten Gemisches von Kohlengas und Wasserdampf