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 J BlackburnfiledCriticalJ Blackburn
Priority to DK142972ApriorityCriticalpatent/DK141075B/da
Publication of DK141075BpublicationCriticalpatent/DK141075B/da
Application grantedgrantedCritical
Publication of DK141075CpublicationCriticalpatent/DK141075C/da