Granted Patent
Utility
US 5,111,053 · App. 07/656,848
Controlling a liquid metal ion source by analog feedback and digital CPU control
Inventor:
Katsumi Suzuki
Patented Case
View Patent ↗
Granted: May 5, 1992
Filed: Feb 19, 1991
Inventor
Katsumi Suzuki
Assignee (at issue)
SEIKO INSTRUMENTS 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.