Granted Patent
Utility
US 6,080,346 · App. 08/765,871
Extrusion apparatus and method and extruded thermoplastic polymer
Inventor:
Raymond Leslie Jack
Patented Case
View Patent ↗
Granted: Jun 27, 2000
Filed: Jan 10, 1997
Inventor
Raymond Leslie Jack
Assignee (at issue)
British Technology Group Inter-Corporation LIC LIM
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.