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 Viggo BerthelsenfiledCriticalViggo Berthelsen
Application grantedgrantedCritical
Publication of DK56232CpublicationCriticalpatent/DK56232C/da
Anordning ved vandførende Anlæg til Hindring af den ved Vandnedsivning eller Efterafstrømning af mindre Vandmængder eller Vandansamlinger bevirkede Gennemfrysning af et Ledningstværsnit.