Granted Patent
Utility
US 4,843,288 · App. 07/174,079
Phase locked motor control system for multiple disk drive units
Inventors:
Le Roy A. Volz, Daniel R. Vigil
Patented Case
View Patent ↗
Granted: Jun 27, 1989
Filed: Mar 28, 1988
Inventors
Le Roy A. Volz
Daniel R. Vigil
Assignee (at issue)
Rigidyne 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.