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Priority claimed from GB4708272Aexternal-prioritypatent/GB1422949A/en
Publication of NO763298LpublicationCriticalpatent/NO763298L/no
Application filed by Heathcoat & Co LtdfiledCriticalHeathcoat & Co Ltd
Priority to NO763298ApriorityCriticalpatent/NO140351C/no
Publication of NO140351BpublicationCriticalpatent/NO140351B/no
Publication of NO140351CpublicationCriticalpatent/NO140351C/no