Granted Patent
Utility
US 6,801,173 · App. 10/220,731
Structure with switchable magnetic properties
Inventor:
Michael Charles Keogh Wiltshire
Patented Case
View Patent ↗
Granted: Oct 5, 2004
Filed: Dec 16, 2002
Inventor
Michael Charles Keogh Wiltshire
Assignee (at issue)
Marconi Optical Components 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.