Granted Patent
Utility
US 6,828,027 · App. 10/449,086
Fire-resistant coated building panels
Inventor:
Hans Sulzer
Patented Case
View Patent ↗
Granted: Dec 7, 2004
Filed: Jun 2, 2003
Inventor
Hans Sulzer
Assignee (at issue)
BASWA ACOUSTIC AG
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.