Granted Patent
Utility
US 4,864,552 · App. 06/902,350
Driving signal for coarse servo employing sampled offset signal
Inventors:
Kurt W. Getreuer, David L. Schell
Patented Case
View Patent ↗
Granted: Sep 5, 1989
Filed: Aug 29, 1986
Inventors
Kurt W. Getreuer
David L. Schell
Assignee (at issue)
Laser Magnetic Storage International Company
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.