Granted Patent
Utility
US 5,507,986 · App. 08/308,070
Method of making a ceramic tube
Inventors:
Sung S. Pak, Archie N. Tolley
Patented Case
View Patent ↗
Granted: Apr 16, 1996
Filed: Sep 16, 1994
Inventors
Sung S. Pak
Archie N. Tolley
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.