US6190484B1 (Expired)
2004-09-08
MAINTENANCE FEE REMINDER MAILED
2005-02-22
FOR FAILURE TO PAY MAINTENANCE FEES
2005-03-23
ON STATUS: PATENT DISCONTINUATION
Free Format Text PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362
2005-04-12
-EXPIRED DUE TO FAILURE TO PAY MAINTENANCE FEE
Effective DATE 20050220