Granted Patent
Utility
US 5,888,611 · App. 08/070,711
Multilayer hollow fiber body and method of making
Inventor:
Ronald J. Leonard
Patented Case
View Patent ↗
Granted: Mar 30, 1999
Filed: Apr 30, 1998
Inventor
Ronald J. Leonard
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.