US Patent
Patent No. US 06483576
Published on Nov 19, 2002
Application No. 09/458850
Filed on Dec 10, 1999
Priority Date -
Inventor/Applicants
Gardner, Norman A. - Penn Valley, PA
Classification
International:
G06K 9/74
National:2
356/71
382/137;
Field of Search 11
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;