Granted Patent
Utility
US 5,494,639 · App. 08/322,764
Biosensor for measuring changes in viscosity and/or density of a fluid
Inventor:
Andrzej Grzegorzewski
Patented Case
View Patent ↗
Granted: Feb 27, 1996
Filed: Oct 13, 1994
Inventor
Andrzej Grzegorzewski
Assignee (at issue)
Behringwerke Aktiengesellschaft
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.