Granted Patent
Utility
US 6,388,231 · App. 09/594,089
Systems and methods for controlling depths of a laser cut
Inventor:
John R. Andrews
Patented Case
View Patent ↗
Granted: May 14, 2002
Filed: Jun 15, 2000
Inventor
John R. Andrews
Assignee (at issue)
Xerox Corporation
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.