Granted Patent
Utility
US 5,489,385 · App. 08/196,290
Drip chamber and/or expansion chamber with integral filter
Inventors:
Herbert Raabe, Gottfried Recktenwald
Patented Case
View Patent ↗
Granted: Feb 6, 1996
Filed: Feb 14, 1994
Inventors
Herbert Raabe
Gottfried Recktenwald
Assignee (at issue)
Gambro Dialysatoren GmbH
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.