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 Fritz HelkenbergfiledCriticalFritz Helkenberg
Priority to DK317361ApriorityCriticalpatent/DK94666C/en
Application grantedgrantedCritical
Publication of DK94666CpublicationCriticalpatent/DK94666C/en