Granted Patent
Utility
US 4,843,495 · App. 06/057,296
Cyclical servo zone tracking method and apparatus for helical scan recording devices
Inventors:
Steven P. Georgis, Kelly J. Beavers, Steve E. Haugland
Patented Case
View Patent ↗
Granted: Jun 27, 1989
Filed: May 11, 1987
Inventors
Steven P. Georgis
Kelly J. Beavers
Steve E. Haugland
Assignee (at issue)
Exabyte Corporation
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.