Granted Patent
Utility
US 5,665,231 · App. 08/551,683
Full flow/bypass filter assembly
Inventors:
Brian J. Langsdorf, Ralph Allen Knopp, Gerard W. Bilski
Patented Case
View Patent ↗
Granted: Sep 9, 1997
Filed: Nov 1, 1995
Inventors
Brian J. Langsdorf
Ralph Allen Knopp
Gerard W. Bilski
Assignee (at issue)
AlliedSignal, 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.