Granted Patent
Utility
US 4,889,999 · App. 07/249,543
Master electrical load control system
Inventor:
Michael J. Rowen
Patented Case
View Patent ↗
Granted: Dec 26, 1989
Filed: Sep 26, 1988
Inventor
Michael J. Rowen
Assignee (at issue)
Lutron Electronics Co., 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.