IP Library › Granted Patent US 6,793,720
Granted Patent Utility PCT National Stage
US 6,793,720 · Confirmation No. 2376

SOLID MARKING COMPOSITION AS WRITING MEANS, A WRITING INSTRUMENT, AN OPTICALLY VARIABLE MARKING LAYER AND USE OF A PLURALITY OF OPTICALLY VARIABLE PIGMENTS

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Quick Facts
Patent No.
US 6,793,720
App. No.
10/239,182
Filed
2002-09-26
Granted
2004-09-21
Pub. No.
US20030056688A1
Art Unit
1755
PTA
-51 days