Granted Patent
Utility
US 4,876,415 · App. 07/175,556
Low cost keyboard with key tops defining surface of curved profile
Inventor:
Kevin Clancy
Patented Case
View Patent ↗
Granted: Oct 24, 1989
Filed: Mar 31, 1988
Inventor
Kevin Clancy
Assignee (at issue)
Honeywell Limited
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.