Granted Patent
Utility
US 4,390,912 · App. 06/206,008
Transducer positioning system and data disk therefor
Inventors:
Friedrich R. Hertrich, Slobodan R. Perera
Patented Case
View Patent ↗
Granted: Jun 28, 1983
Filed: Nov 12, 1980
Inventors
Friedrich R. Hertrich
Slobodan R. Perera
Assignee (at issue)
Digital Equipment 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.