Granted Patent
Utility
US 5,593,580 · App. 08/405,493
Filtration cassette article, and filter comprising same
Inventor:
Henry B. Kopf
Patented Case
View Patent ↗
Granted: Jan 14, 1997
Filed: Mar 15, 1995
Inventor
Henry B. Kopf
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.