Granted Patent
Utility
US 6,046,729 · App. 09/046,597
Z axis device of a computer mouse
Inventor:
Yung-Chou Chung
Patented Case
View Patent ↗
Granted: Apr 4, 2000
Filed: Mar 24, 1998
Inventor
Yung-Chou Chung
Assignee (at issue)
Primax Electronics Ltd.
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.