Granted Patent
Utility
US 6,212,731 · App. 09/282,776
Apparatus for cleaning floors
Inventors:
Uwe Eckerlein, Heinrich-Tito Mayer
Patented Case
View Patent ↗
Granted: Apr 10, 2001
Filed: Mar 31, 1999
Inventors
Uwe Eckerlein
Heinrich-Tito Mayer
Assignee (at issue)
Diversey Lever, Inc.
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.