US4445652A (Expired)
1982-03-25
ASSIGNMENT
Owner Name BOEING COMPANY THE 7755 MARGINAL WAY SOUTH, SEATTL
Free Format Text ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:ENGELKE, CLAUDE W.;POWER, ROYAL A.;BREES, DALE W.;REEL/FRAME:003979/0406
Effective DATE 19820301
1987-10-13
PAYMENT
Year of Fee Payment 4
1991-12-03
MAINTENANCE FEE REMINDER MAILED
1992-05-03
FOR FAILURE TO PAY MAINTENANCE FEES
1992-07-07
-EXPIRED DUE TO FAILURE TO PAY MAINTENANCE FEE
Effective DATE 19920503
2018-01-22
ON STATUS: PATENT DISCONTINUATION
Free Format Text PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362
