Granted Patent
Utility
US 4,442,151 · App. 06/327,242
Wood plank wallcovering system using widths of 3 to 8 inches
Inventor:
Daniel A. Winkowski
Patented Case
View Patent ↗
Granted: Apr 10, 1984
Filed: Dec 3, 1981
Inventor
Daniel A. Winkowski
Assignee (at issue)
National Gypsum Company
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.