Granted Patent
Utility
US 5,342,517 · App. 08/003,518
Filtration cassette article, and filter comprising same
Inventor:
Henry B. Kopf
Patented Case
View Patent ↗
Granted: Aug 30, 1994
Filed: Jan 12, 1993
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.