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 GB49989/74Aexternal-prioritypatent/GB1494646A/en
Priority claimed from GB4999074Aexternal-prioritypatent/GB1494324A/en
Priority claimed from IN223/CAL/76Aexternal-prioritypatent/IN146063B/en
Application filed by W WagnerfiledCriticalW Wagner
Priority to IN1238/CAL/78ApriorityCriticalpatent/IN148332B/en
Publication of IN148332BpublicationCriticalpatent/IN148332B/en
