G - Physics – 09 – F
Patent
G - Physics
09
F
G09F 3/00 (2006.01) G06K 19/06 (2006.01) G07B 17/00 (2006.01)
Patent
CA 2265326
A postage stamp for general circulation which has a unique identifier bar code is provided which allows the prevention of various fraudulent stamp usages.
Critchley Barbara Lynn
Ulvr Joseph Frank
Canada Post Corporation
Smart & Biggar
LandOfFree
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