Granted Patent
Utility
US 6,408,594 · App. 09/334,233
Reinforced structural insulated panels with plastic impregnated paper facings
Inventor:
William H. Porter
Patented Case
View Patent ↗
Granted: Jun 25, 2002
Filed: Jun 16, 1999
Inventor
William H. Porter
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.