Granted Patent
Utility
US 6,440,543 · App. 09/194,110
Flexible flooring tile
Inventor:
Hans-Dieter Vieluf
Patented Case
View Patent ↗
Granted: Aug 27, 2002
Filed: Jan 4, 1999
Inventor
Hans-Dieter Vieluf
Assignee (at issue)
DLW Aktiengesellschaft
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.