Granted Patent
Utility
US 5,490,883 · App. 08/260,757
Solution and method for cleaning marble surfaces
Inventors:
Kevin P. McLaren, Diane Marie Scheele
Patented Case
View Patent ↗
Granted: Feb 13, 1996
Filed: Jun 16, 1994
Inventors
Kevin P. McLaren
Diane Marie Scheele
Assignee (at issue)
The ServiceMaster Company, L.P.
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.