Granted Patent
Utility
US 6,588,172 · App. 09/931,226
Building panels with plastic impregnated paper
Inventor:
William H. Porter
Patented Case
View Patent ↗
Granted: Jul 8, 2003
Filed: Aug 16, 2001
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.