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Publication date
Application filed by Trentesaux Toulemonde SafiledCriticalTrentesaux Toulemonde Sa
Publication of NO130933BpublicationCriticalpatent/NO130933B/no
Publication of NO130933CpublicationCriticalpatent/NO130933C/no
B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
B41M5/00—Duplicating or marking methods; Sheet materials for use therein
B41M5/124—Duplicating or marking methods; Sheet materials for use therein using pressure to make a masked colour visible, e.g. to make a coloured support visible, to create an opaque or transparent pattern, or to form colour by uniting colour-forming components