Granted Patent
Utility
US 5,779,902 · App. 08/903,271
In-line vent filter for automatically draining a biological liquid filtration device
Inventor:
Peter Zuk, Jr.
Patented Case
View Patent ↗
Granted: Jul 14, 1998
Filed: Jul 25, 1997
Inventor
Peter Zuk, Jr.
Assignee (at issue)
Hemasure, 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.