Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B41
PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
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B41M
PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING,
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5/00
Duplicating or marking methods; Sheet materials for use therein
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B41M5/124
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
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B41M5/132
Chemical colour-forming components; Additives or binders therefor
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