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 Pittsburgh Plate Glass CofiledCriticalPittsburgh Plate Glass Co
Priority to DK413554ApriorityCriticalpatent/DK85577C/da
Application grantedgrantedCritical
Publication of DK85577CpublicationCriticalpatent/DK85577C/da
Plade med lyseffekter, især skærmplade til lyskilder, af formbart materiale, fortrinsvis glas, og fremgangsmåde og apparat til fremstilling af sådanne plader.