Patent classifications
G
PHYSICS
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G06
COMPUTING OR CALCULATING; COUNTING
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G06M
COUNTING MECHANISMS; COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR
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1/00
Design features of general application
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G06M1/27
for representing the result of count in the form of electric signals, e.g. by sensing markings on the counter drum
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G06M1/272
using photoelectric means
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