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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Priority claimed from GB2868272Aexternal-prioritypatent/GB1388306A/en
Application filed by British Insulated CallendersfiledCriticalBritish Insulated Callenders
Priority to IN1424/CAL/73ApriorityCriticalpatent/IN139670B/en
Publication of IN139670BpublicationCriticalpatent/IN139670B/en