PROCESS FOR THE PRODUCTION OF HALF-TONE AND LINE WORK MULTI-COLOR PHOTOGRAPHIC IMAGES von LARIDON U,BE

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PROCESS FOR PRODUCING MULTICOLOUR PHOTOGRAPHIC IMAGES von LARIDON U,BE

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SE354473 von DELZENNE G,BE, LARIDON U,BE

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PHOTOPOLYMERISATION OF ETHYLENICALLY UNSATURATED ORGANIC COMPOUNDS von DELZENNE G,BE, PEETERS H,BE, LARIDON U,BE

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FREE RADICAL PHOTOGRAPHIC SYSTEM CONTAINING A PYRYLIUM DYE FORMER von VAN DEN HOUTE J,BE, LARIDON U,BE

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PHOTOCHROMIC COMPOSITION CONTAINING POLYHALOGENATED COMPOUND,SPIROPYRAN COMPOUND AND SENSITIZER AND THE USE THEREOF von VAN DEN HOUTE J,BE, LARIDON U,BE

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PHOTOCHROMIC COMPOSITION CONTAINING POLYHALOGENATED HYDROCARBON,SPIROPYRAN COMPOUND AND ZNO OR PB(II) OXIDE AND THE USE THEREOF von VAN DEN HOUTE J,BE, LARIDON U,BE

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PHOTOCHROMIC COMPOSITION CONTAINING POLYHALOGENATED HYDROCARBON,SPIROPYRAN COMPOUND AND POLY-N-VINYLCARBAZOLE AND THE USE THEREOF von VAN DEN HOUTE J,BE, LARIDON U,BE

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INCREASING THE LIGHT SENSITIVITY OF POLYMERIC COMPOSITIONS COMPRISING AZIDO GROUPS von DELZENNE G,BE, PEETERS H,BE, LARIDON U,BE

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