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 Reinhard ReentsfiledCriticalReinhard Reents
Publication of CH45251ApublicationCriticalpatent/CH45251A/en
Järnbetontak ägande jämn undre ytan och bestående av Enskilda järnbetonbågstycken mellan järnbetonbjälkar eller mellan järnbalkar, resp. the following footprints