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A Description of Ventilators: Whereby Great Quantities of Fresh Air May with Ease be Conveyed Into Mines, Goals, Hospitals... in Enchange for Their Noxious Air
Verfahren zur Regulierung der Strömungsgeschwindigkeit der Abgase von Feuerungsanlagen mittelst Zufuhr von Luft in den Abzugsweg der Gase und Einrichtung zur Ausübung des Verfahrens.