Granted Patent
Utility
US 4,720,828 · App. 06/846,335
I/o handler
Inventor:
Donald J. Jones
Patented Case
View Patent ↗
Granted: Jan 19, 1988
Filed: Mar 31, 1986
Inventor
Donald J. Jones
Assignee (at issue)
Wang Laboratories, 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.