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
Priority claimed from GB848423090Aexternal-prioritypatent/GB8423090D0/en
Application filed by William Desmond SherrardfiledCriticalWilliam Desmond Sherrard
Application grantedgrantedCritical
Publication of ATE44321T1publicationCriticalpatent/ATE44321T1/de