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 Nielsen A/S PfiledCriticalNielsen A/S P
Priority to DK80675AApriorityCriticalpatent/DK135466B/da
Priority to SE7601623Aprioritypatent/SE403922B/xx
Priority to NO760667Aprioritypatent/NO142679C/no
Publication of DK80675ApublicationCriticalpatent/DK80675A/da
Publication of DK135466BpublicationCriticalpatent/DK135466B/da
Application grantedgrantedCritical
Publication of DK135466CpublicationCriticalpatent/DK135466C/da
