Granted Patent
Utility
US 4,812,149 · App. 07/128,310
Hot inert gas purging for filter blowback process
Inventors:
Rodney L. Griffin, David F. Ciliberti, Thomas E. Lippert
Patented Case
View Patent ↗
Granted: Mar 14, 1989
Filed: Dec 3, 1987
Inventors
Rodney L. Griffin
David F. Ciliberti
Thomas E. Lippert
Assignee (at issue)
Westinghouse Electric Company LLC
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.