Granted Patent
Utility
US 5,639,409 · App. 08/369,789
Method for manufacturing a tubular extrusion
Inventor:
Johannes Gerardus Maria van Muiden
Patented Case
View Patent ↗
Granted: Jun 17, 1997
Filed: Jan 6, 1995
Inventor
Johannes Gerardus Maria van Muiden
Assignee (at issue)
CORDIS CORPORATION
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.