Granted Patent
Utility
US 5,153,440 · App. 07/679,861
Method of stabilizing operation for a liquid metal ion source
Inventor:
Anto Yasaka
Patented Case
View Patent ↗
Granted: Oct 6, 1992
Filed: Apr 3, 1991
Inventor
Anto Yasaka
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.