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 An Der Sihl A G Vormals A SchmfiledCriticalAn Der Sihl A G Vormals A Schm
Publication of CH77551ApublicationCriticalpatent/CH77551A/en