Granted Patent
Utility
US 5,868,930 · App. 08/782,120
Filtration cassette article and filter comprising same
Inventor:
Henry B. Kopf
Patented Case
View Patent ↗
Granted: Feb 9, 1999
Filed: Jan 13, 1997
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.