Granted Patent
Utility
US 5,426,127 · App. 08/312,346
Rigid foams with improved insulation and physical properties
Inventor:
Herman P. Doerge
Patented Case
View Patent ↗
Granted: Jun 20, 1995
Filed: Sep 26, 1994
Inventor
Herman P. Doerge
Assignee (at issue)
Miles Inc.
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.