Granted Patent
Utility
US 5,592,933 · App. 08/374,557
Hygroscopic cartridge particularly for filters for medical use
Inventor:
Giuseppe Zucchi
Patented Case
View Patent ↗
Granted: Jan 14, 1997
Filed: Mar 23, 1995
Inventor
Giuseppe Zucchi
Assignee (at issue)
MallincKrodt Medical, 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.