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
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Application filedfiledCritical
Priority to NL6508601ApriorityCriticalpatent/NL6508601A/xx
Priority to DE19656601637prioritypatent/DE6601637U/de
Priority to DE19651457979prioritypatent/DE1457979A1/de
Priority to CH854866Aprioritypatent/CH450050A/de
Priority to AT576166Aprioritypatent/AT288255B/de
Publication of NL6508601ApublicationCriticalpatent/NL6508601A/xx