Granted Patent
Utility
US 5,424,014 · App. 08/144,621
Method for extruding foamable polymer material
Inventors:
Sammie Joe Glorioso, James H. Burgess
Patented Case
View Patent ↗
Granted: Jun 13, 1995
Filed: Nov 1, 1993
Inventors
Sammie Joe Glorioso
James H. Burgess
Assignee (at issue)
Apache Products Company
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.