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.)
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Application filed by Hydraroll LtdfiledCriticalHydraroll Ltd
Priority claimed from PCT/GB1982/000259external-prioritypatent/WO1983000680A1/en
Application grantedgrantedCritical
Publication of ATE21678T1publicationCriticalpatent/ATE21678T1/de