Granted Patent
Utility
US 5,885,499 · App. 08/687,488
Method for the manufacture of filter wells
Inventor:
Arvi Aksberg
Patented Case
View Patent ↗
Granted: Mar 23, 1999
Filed: Aug 22, 1996
Inventor
Arvi Aksberg
Assignee (at issue)
Pharmacia Biotech 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.