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Application filed by Helge PranfiledCriticalHelge Pran
Priority to NO950337ApriorityCriticalpatent/NO950337D0/en
Publication of NO950337D0publicationCriticalpatent/NO950337D0/en
NO950337A1995-01-301995-01-30
Comprehensive lighting system based on direct sunlight as the main source and artificial light as additional light
NO950337D0
(en)