Granted Patent
Utility
US 5,314,636 · App. 07/977,310
Liquid cleaning products
Inventors:
Johannes H. M. Rek, Mark P. Houghton, Rudolf C. Verheul
Patented Case
View Patent ↗
Granted: May 24, 1994
Filed: Nov 16, 1992
Inventors
Johannes H. M. Rek
Mark P. Houghton
Rudolf C. Verheul
Assignee (at issue)
Lever Industrial Company, Division of Indopco, 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.