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
Priority claimed from GB848427918Aexternal-prioritypatent/GB8427918D0/en
Priority claimed from GB858501248Aexternal-prioritypatent/GB8501248D0/en
Application filed by Schlaepfer & Co AgfiledCriticalSchlaepfer & Co Ag
Priority claimed from EP85905799Aexternal-prioritypatent/EP0199810B1/de
Application grantedgrantedCritical
Publication of ATE47570T1publicationCriticalpatent/ATE47570T1/de