Granted Patent
Utility
US 6,822,965 · App. 09/869,085
Approximate state control mechanism
Inventors:
Ian David Johnson, Paul Howarth
Patented Case
View Patent ↗
Granted: Nov 23, 2004
Filed: Jun 20, 2001
Inventors
Ian David Johnson
Paul Howarth
Assignee (at issue)
Xyratex Technology Limited
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.