Granted Patent
Utility
US 4,642,501 · App. 06/786,979
Magnetic suspension and pointing system with flux feedback linearization
Inventors:
Kevin D. Kral, Douglas D. Havenhill
Patented Case
View Patent ↗
Granted: Feb 10, 1987
Filed: Oct 15, 1985
Inventors
Kevin D. Kral
Douglas D. Havenhill
Assignee (at issue)
Sperry Corp.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.