Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ericsson Telefon Ab L MfiledCriticalEricsson Telefon Ab L M
Application grantedgrantedCritical
Publication of DK96894CpublicationCriticalpatent/DK96894C/da
Sätt att montera odelade bottnar i cylindriska destillationskolonner, i vilkas innerväggar fästats ringformiga innerflänsar samt destillationskolonner med bottnar monterade på detta sätt