Granted Patent
Utility
US 5,153,451 · App. 07/746,549
Fail safe level shifter
Inventors:
Norihisa Yamamura, Kazunori Hibino, Tatsuo Hayakawa
Patented Case
View Patent ↗
Granted: Oct 6, 1992
Filed: Aug 19, 1991
Inventors
Norihisa Yamamura
Kazunori Hibino
Tatsuo Hayakawa
Assignee (at issue)
Motorola, 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.