Granted Patent
Utility
US 4,248,832 · App. 06/047,410
Waste gas purification reactor including packing holder and catalyst leveler support
Inventors:
John Edward Aiken, William J. Didycz, Stanley J. Kerkentzes
Patented Case
View Patent ↗
Granted: Feb 3, 1981
Filed: Jun 11, 1979
Inventors
John Edward Aiken
William J. Didycz
Stanley J. Kerkentzes
Assignee (at issue)
United States Steel Corporation
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.