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 Erco Ind LtdfiledCriticalErco Ind Ltd
Priority to PL19622877ApriorityCriticalpatent/PL107863B1/pl
Publication of PL196228A1publicationCriticalpatent/PL196228A1/pl
Publication of PL107863B1publicationCriticalpatent/PL107863B1/pl