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Priority claimed from SE8207127Aexternal-prioritypatent/SE446468B/en
Application filed by Stig PetterssonfiledCriticalStig Pettersson
Publication of FI834559A0publicationCriticalpatent/FI834559A0/en
Publication of FI834559ApublicationCriticalpatent/FI834559A/en
Publication of FI76152BpublicationCriticalpatent/FI76152B/en
Application grantedgrantedCritical
Publication of FI76152CpublicationCriticalpatent/FI76152C/en