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 Kelvin & Hughes LtdfiledCriticalKelvin & Hughes Ltd
Application grantedgrantedCritical
Publication of DK90274CpublicationCriticalpatent/DK90274C/en