Patent 06483576 - Counterfeit detection system > Summary

US Patent

Patent Application No. US 06483576

Published on Nov 19, 2002

Application No. 09/458850

Field on Dec 10, 1999

Classification

International:

G06K 9/74

National:

356/71

382/137;

Field of Search

356/71

356/376;

356/402;

250/556;

250/458.1;

250/461.1;

250/461.2;

382/115;

382/116;

382/137;

382/140;