Granted Patent
Utility
US 5,393,536 · App. 08/043,037
Coextrusion apparatus
Inventors:
Jeffrey R. Brandt, Edward Kowalik, Bobby D. Riley
Patented Case
View Patent ↗
Granted: Feb 28, 1995
Filed: Apr 5, 1993
Inventors
Jeffrey R. Brandt
Edward Kowalik
Bobby D. Riley
Assignee (at issue)
Crane Plastics Company LLC
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.