Granted Patent
Utility
US 6,558,749 · App. 10/101,579
Method for manufacturing a workpiece with wear-protective coating
Inventor:
Hans Braendle
Patented Case
View Patent ↗
Granted: May 6, 2003
Filed: Mar 20, 2002
Inventor
Hans Braendle
Assignee (at issue)
Unakis Balzers AG
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.