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.)
Vorrichtung zum Verhindern des Rueckstroemens der Fluessigkeit in den Fallrohren vonSteilrohrkesseln mittels drosselnder, am Austrittsende der Fallrohre angeordneter Rueckstroemhindernisse