Granted Patent
Utility
US 6,626,057 · App. 09/566,023
Gear-shifting device for changing scanning speed of optical scanner
Inventor:
Po-Hua Fang
Patented Case
View Patent ↗
Granted: Sep 30, 2003
Filed: May 8, 2000
Inventor
Po-Hua Fang
Assignee (at issue)
Umax Data Systems, 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.