Granted Patent
Utility
US 5,189,543 · App. 07/615,567
Infra-red wireless keyboard system
Inventors:
Steve Lin, Kent Kao, Robert Hsue
Patented Case
View Patent ↗
Granted: Feb 23, 1993
Filed: Nov 19, 1990
Inventors
Steve Lin
Kent Kao
Robert Hsue
Assignee (at issue)
Acer Incorporated
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.