US5122802A (Expired)
1994-11-22
CERTIFICATE OF CORRECTION
1996-01-23
MAINTENANCE FEE REMINDER MAILED
1996-06-17
PAYMENT
Year of Fee Payment 4
1996-06-17
FOR LATE PAYMENT
2000-01-11
MAINTENANCE FEE REMINDER MAILED
2000-06-16
PAYMENT
Year of Fee Payment 8
2000-06-16
FOR LATE PAYMENT
2003-12-31
MAINTENANCE FEE REMINDER MAILED
2004-06-16
FOR FAILURE TO PAY MAINTENANCE FEES
2004-08-10
-EXPIRED DUE TO FAILURE TO PAY MAINTENANCE FEE
Effective DATE 20040616
2018-01-27
ON STATUS: PATENT DISCONTINUATION
Free Format Text PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362
US4935742A (Expired)
1993-12-20
PAYMENT
Year of Fee Payment 4
1998-02-14
MAINTENANCE FEE REMINDER MAILED
1998-06-21
FOR FAILURE TO PAY MAINTENANCE FEES
1998-09-01
-EXPIRED DUE TO FAILURE TO PAY MAINTENANCE FEE
Effective DATE 19980624
2018-01-29
ON STATUS: PATENT DISCONTINUATION
Free Format Text PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362