Granted Patent
Utility
US 6,528,753 · App. 09/870,950
Method of coating an emissive element
Inventor:
Michael C. McBennett
Patented Case
View Patent ↗
Granted: Mar 4, 2003
Filed: May 31, 2001
Inventor
Michael C. McBennett
Assignee (at issue)
THE ESAB GROUP 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.