Granted Patent
Utility
US 5,474,597 · App. 08/284,677
Method and device for gas cleaning or gas cooling
Inventor:
Claes Halldin
Patented Case
View Patent ↗
Granted: Dec 12, 1995
Filed: Aug 30, 1994
Inventor
Claes Halldin
Assignee (at issue)
ABB Flakt AB
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.