Granted Patent
Utility
US 5,328,612 · App. 07/976,785
Thimble-shaped liquid filter
Inventors:
James W. Martin, Gerard P. Bernadyn, Donald L. Gagnon, Russell A. Swanson
Patented Case
View Patent ↗
Granted: Jul 12, 1994
Filed: Nov 16, 1992
Inventors
James W. Martin
Gerard P. Bernadyn
Donald L. Gagnon
Russell A. Swanson
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.