US5534873A (Expired)
1995-02-07
ASSIGNMENT
Owner Name MCDONNELL DOUGLAS CORPORATION, MISSOURI
Free Format Text ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:WIECHMAN, ALAN R.;FERRELL, BARTON G.;BUTTERS, WILLIAM G.;AND OTHERS;REEL/FRAME:007318/0387
Effective DATE 19940102
1996-06-28
INFORMATION ON STATUS: PATENT GRANT
Free Format Text PATENTED CASE
2000-01-07
PAYMENT
Year of Fee Payment 4
2004-01-09
PAYMENT
Year of Fee Payment 8
2008-01-09
PAYMENT
Year of Fee Payment 12
2008-01-14
MAINTENANCE FEE REMINDER MAILED
