Granted Patent
Utility
US 4,904,884 · App. 07/184,243
Schmitt trigger adapted to interface between different transistor architectures
Inventors:
Timothy G. O'Shaughnessy, David Chung
Patented Case
View Patent ↗
Granted: Feb 27, 1990
Filed: Apr 21, 1988
Inventors
Timothy G. O'Shaughnessy
David Chung
Assignee (at issue)
Western Digital
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.