INPADOC Patent Family US4730793
Publication No. Publication date Filing No. Priority Status
US4730793A 1988-03-15 US56616384A US29226081A 19810812
US56616384A 19840126		 Expired
US4530476A 1985-07-23 US29226081A US29226081A 19810812 Expired
TR21930A 1985-11-13 TR2193082A US29226081A 19810812 Unknown
KR890000530B1 1989-03-20 KR820003604A US29226081A 19810812 Unknown
KR840001090A 1984-03-28 KR820003604A US29226081A 19810812 Unknown
IL66512A 1989-09-10 IL6651282A US29226081A 19810812 Unknown
GB2104853A 1983-03-16 GB8221335A US29226081A 19810812 Expired
GB2104853B 1985-11-20 GB8221335A US29226081A 19810812 Expired
DE3229474A1 1983-02-24 DE3229474A US29226081A 19810812 Expired
DE3229474C2 1986-11-20 DE3229474A US29226081A 19810812 Expired
CA1200300A 1986-02-04 CA408154A US29226081A 19810812 Expired

INPADOC Legal Status
US4730793A (Expired)
1991-06-20
PAYMENT
Year of Fee Payment 4
 
1995-10-24
MAINTENANCE FEE REMINDER MAILED
 
1996-03-17
FOR FAILURE TO PAY MAINTENANCE FEES
 
1996-05-28
-EXPIRED DUE TO FAILURE TO PAY MAINTENANCE FEE
Effective DATE 19960320
 
2018-01-23
ON STATUS: PATENT DISCONTINUATION
Free Format Text PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362
 
US4530476A (Expired)
1981-08-12
ASSIGNMENT
Owner Name E-SYSTEMS, INC., 6250 LBJ FREEWAY, DALLAS, TX. 752
Free Format Text ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:THURBER, CHARLES H. JR;BEHRENS, FREDERICK A.;HUNTON, JOHN H.;REEL/FRAME:003929/0126;SIGNING DATES FROM 19810805 TO 19810810
 
1989-01-19
PAYMENT
Year of Fee Payment 4
 
1992-09-18
PAYMENT
Year of Fee Payment 8
 
1997-02-25
MAINTENANCE FEE REMINDER MAILED
 
1997-07-20
FOR FAILURE TO PAY MAINTENANCE FEES
 
1997-09-30
-EXPIRED DUE TO FAILURE TO PAY MAINTENANCE FEE
Effective DATE 19970723
 
2018-01-22
ON STATUS: PATENT DISCONTINUATION
Free Format Text PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362
 
TR21930 (Unknown)
No INPADOC legal data
 
KR890000530 (Unknown)
No INPADOC legal data
 
KR840001090 (Unknown)
No INPADOC legal data
 
IL66512 (Unknown)
No INPADOC legal data
 
GB2104853A (Expired)
1995-03-22
CEASED THROUGH NON-PAYMENT OF RENEWAL FEE
Effective DATE 19940723
 
GB2104853B (Expired)
1995-03-22
CEASED THROUGH NON-PAYMENT OF RENEWAL FEE
Effective DATE 19940723
 
DE3229474A1 (Expired)
1983-10-13
FOR EXAMINATION PARAGRAPH 44
 
1984-07-19
CHANGE OF THE MAIN CLASSIFICATION IPC CLASSIFICATION F42B 15/16
 
1986-11-20
+GRANT AFTER EXAMINATION
 
1987-04-16
AGAINST THE PATENT
 
1990-11-22
REVOCATION
 
DE3229474C2 (Expired)
1983-10-13
FOR EXAMINATION PARAGRAPH 44
 
DE3229474C2 (Expired)
1984-07-19
CHANGE OF THE MAIN CLASSIFICATION IPC CLASSIFICATION F42B 15/16
 
DE3229474C2 (Expired)
1986-11-20
+GRANT AFTER EXAMINATION
 
DE3229474C2 (Expired)
1987-04-16
AGAINST THE PATENT
 
DE3229474C2 (Expired)
1990-11-22
REVOCATION
 
CA1200300A (Expired)
2003-02-04

 


Updated on July 22, 2019