Patent classifications
G
PHYSICS
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G06
COMPUTING OR CALCULATING; COUNTING
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G06K
GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
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19/00
Record carriers for use with machines and with at least a part designed to carry digital markings
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G06K19/06
characterised by the kind of the digital marking, e.g. shape, nature, code
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G06K19/067
Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards; also with resonating or responding marks without active components
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G06K19/07
with integrated circuit chips
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G06K19/077
Constructional details, e.g. mounting of circuits in the carrier
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G06K19/07701
the record carrier comprising an interface suitable for human interaction
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G06K19/07703
the interface being visual
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G06K19/07705
the visual interface being a single light or small number of lights capable of being switched on or off, e.g. a series of LEDs
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