Granted Patent
Utility
US 5,503,741 · App. 08/395,158
Dialysis device with hermetically sealed vacant chamber
Inventor:
Carl Clark
Patented Case
View Patent ↗
Granted: Apr 2, 1996
Filed: Feb 27, 1995
Inventor
Carl Clark
Assignee (at issue)
Pierce Chemical Company
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.