Granted Patent
Utility
US 5,839,474 · App. 08/588,802
Mix head eductor
Inventor:
Michael J. Greaney
Patented Case
View Patent ↗
Granted: Nov 24, 1998
Filed: Jan 19, 1996
Inventor
Michael J. Greaney
Assignee (at issue)
S. C. Johnson Commercial Markets, 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.