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 GB888826824Aexternal-prioritypatent/GB8826824D0/en
Priority claimed from GB898908886Aexternal-prioritypatent/GB8908886D0/en
Application filed by Whitbread & Co LtdfiledCriticalWhitbread & Co Ltd
Priority claimed from PCT/GB1989/001362external-prioritypatent/WO1990005674A1/en
Application grantedgrantedCritical
Publication of ATE86571T1publicationCriticalpatent/ATE86571T1/de