Granted Patent
Utility
US 5,600,217 · App. 08/343,275
CMOS disk drive motor control circuit having back-EMF regulator circuitry
Inventor:
Donald M. Bartlett
Patented Case
View Patent ↗
Granted: Feb 4, 1997
Filed: Nov 22, 1994
Inventor
Donald M. Bartlett
Assignees (at issue)
AT&T Global Information Solutions Company
Hyundai Electronics America
Symbios Logic Inc.
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.