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Priority claimed from GB32065/63Aexternal-prioritypatent/GB1100442A/en
Application filed by H SmithfiledCriticalH Smith
Publication of DK132007BpublicationCriticalpatent/DK132007B/da
Application grantedgrantedCritical
Publication of DK132007CpublicationCriticalpatent/DK132007C/da