Granted Patent
Utility
US 6,500,758 · App. 09/660,354
Method for selective metal film layer removal using carbon dioxide jet spray
Inventor:
Charles W. Bowers
Patented Case
View Patent ↗
Granted: Dec 31, 2002
Filed: Sep 12, 2000
Inventor
Charles W. Bowers
Assignee (at issue)
Eco-Snow 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.