FI56755B - En i byggnadens eller anlaeggningens ventilationskanalsystem fast monterbar maetflaens foer luftmaengd med en strypflaens av iris-typ
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En i byggnadens eller anlaeggningens ventilationskanalsystem fast monterbar maetflaens foer luftmaengd med en strypflaens av iris-typ
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Application filed by P G Tuote OyfiledCriticalP G Tuote Oy
Priority to FI179272ApriorityCriticalpatent/FI56755C/fi
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Publication of FI56755BpublicationCriticalpatent/FI56755B/fi
Publication of FI56755CpublicationCriticalpatent/FI56755C/fi
FI179272A1972-06-221972-06-22En i byggnadens eller anlaeggningens ventilationskanalsystem fast monterbar maetflaens foer luftmaengd med en strypflaens av iris-typ
FI56755C
(fi)