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 zur Erzielung eines moeglichst hohen Waermeueberganges und einer moeglichst gleichmaessigen Beheizung der einzelnen Rohre eines Rohrbuendels bei Wasserrohrkesseln