Granted Patent
Utility
US 5,380,498 · App. 08/190,558
Apparatus for purification of waste gases
Inventor:
Reijo Kuivalainen
Patented Case
View Patent ↗
Granted: Jan 10, 1995
Filed: Feb 2, 1994
Inventor
Reijo Kuivalainen
Assignee (at issue)
A. Ahlstrom 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.