Granted Patent
Utility
US 5,719,328 · App. 08/672,354
Pressure drop tester for filter rods
Inventor:
Joseph D. Gombash, Jr.
Patented Case
View Patent ↗
Granted: Feb 17, 1998
Filed: Jun 25, 1996
Inventor
Joseph D. Gombash, Jr.
Assignee (at issue)
Hoechst Celanese 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.