Granted Patent
Utility
US 5,482,537 · App. 08/246,222
Gas filtering apparatus
Inventor:
Timo Eriksson
Patented Case
View Patent ↗
Granted: Jan 9, 1996
Filed: May 18, 1994
Inventor
Timo Eriksson
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.