Granted Patent
Utility
US 5,164,589 · App. 07/681,532
Reusable optical interface for non-permanent passive light coupling
Inventor:
Håkan Sjödin
Patented Case
View Patent ↗
Granted: Nov 17, 1992
Filed: May 10, 1991
Inventor
Håkan Sjödin
Assignee (at issue)
Pharmacia Biosensor AB
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.