Granted Patent
Utility
US 6,427,413 · App. 09/629,211
Grooved construction lumber for constructing lumber structures
Inventor:
Claudex Lafrance
Patented Case
View Patent ↗
Granted: Aug 6, 2002
Filed: Jul 31, 2000
Inventor
Claudex Lafrance
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.