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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13/00
Conveying record carriers from one station to another, e.g. from stack to punching mechanism
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G06K13/02
the record carrier having longitudinal dimension comparable with transverse dimension, e.g. punched card
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G06K13/06
Guiding cards; Checking correct operation of card-conveying mechanisms
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G06K13/067
Checking presence, absence, correct position, or moving status of cards
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