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Priority to GR370106495ApriorityCriticalpatent/GR6495B/el
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GR370106495A1937-05-111937-05-11Συστημα δια την κατα βουλησιν και εξ ορισμενων θεσεων μεταβολης τασεως δικτυου φωτισμου εν των συνολω η και σβεσιν αυτου.
GR6495B
(el)