Granted Patent
Utility
US 5,198,635 · App. 07/715,956
Plasma arc welding adapted to ID ellipsoid process
Inventors:
Richard A. Dankovic, Gregory P. Zolton, II, John F. Bushkill, Louis S. Slimak
Patented Case
View Patent ↗
Granted: Mar 30, 1993
Filed: Jun 17, 1991
Inventors
Richard A. Dankovic
Gregory P. Zolton, II
John F. Bushkill
Louis S. Slimak
Assignee (at issue)
The Babcock & Wilcox Company
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.