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0377899 | Dec 1989 | EP |
WO 9928946 | Jun 1999 | WO |
Entry |
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JP 10312771, “Discharge lamp and Image Projector Using Thereof”, Feb. 1999, vol. 1999, No. 2, (Abstract). |
JP 51086281A, Derwent Publication Ltd., AN 1976-69460X, XP002166172, (Abstract). |