Patent classifications
G
PHYSICS
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G07
CHECKING-DEVICES
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G07B
TICKET-ISSUING APPARATUS; FARE-REGISTERING APPARATUS; FRANKING APPARATUS
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G07B17/00016
Relations between apparatus, e.g. franking machine at customer or apparatus at post office, in a franking system
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G07B17/00024
Physical or organizational aspects of franking systems
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