Granted Patent
Utility
US 5,671,574 · App. 08/615,638
Composite insulated wall
Inventor:
Robert Long
Patented Case
View Patent ↗
Granted: Sep 30, 1997
Filed: Mar 13, 1996
Inventor
Robert Long
Assignee (at issue)
Thermomass Technologies, 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.