Granted Patent
Utility
US 5,661,401 · App. 08/614,867
Apparatus for generating corrective magnetic field
Inventors:
Hiroshige Ishikawa, Jun Kida
Patented Case
View Patent ↗
Granted: Aug 26, 1997
Filed: Mar 13, 1996
Inventors
Hiroshige Ishikawa
Jun Kida
Assignee (at issue)
JEOL Ltd.
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.