Granted Patent
Utility
US 6,446,405 · App. 09/679,300
Locking system and flooring board
Inventor:
Darko Pervan
Patented Case
View Patent ↗
Granted: Sep 10, 2002
Filed: Oct 6, 2000
Inventor
Darko Pervan
Assignee (at issue)
Valinge Aluminium AB
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.