Granted Patent
Utility
US 6,809,393 · App. 09/539,145
Level shifter
Inventor:
Tomoyuki Yamazaki
Patented Case
View Patent ↗
Granted: Oct 26, 2004
Filed: Mar 30, 2000
Inventor
Tomoyuki Yamazaki
Assignee (at issue)
FUJI ELECTRIC CO., 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.