Granted Patent
Utility
US 4,844,810 · App. 07/082,499
Installation with multiple functions for replacement of the natural filtration of the blood
Inventors:
Gerard Richalley, Marc Delaunay
Patented Case
View Patent ↗
Granted: Jul 4, 1989
Filed: Aug 7, 1987
Inventors
Gerard Richalley
Marc Delaunay
Assignee (at issue)
Hospal Industrie
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.