Granted Patent
Utility
US 5,656,166 · App. 08/419,452
High collapse pressure porous filter device
Inventors:
Staffan B. Linnersten, Anatolie Hobet
Patented Case
View Patent ↗
Granted: Aug 12, 1997
Filed: Apr 10, 1995
Inventors
Staffan B. Linnersten
Anatolie Hobet
Assignee (at issue)
Fleetguard, Inc.
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.