Granted Patent
Utility
US 6,452,339 · App. 09/461,983
Photocontroller diagnostic system
Inventors:
Joseph F. Morrissey, Jeff D. Walters
Patented Case
View Patent ↗
Granted: Sep 17, 2002
Filed: Dec 15, 1999
Inventors
Joseph F. Morrissey
Jeff D. Walters
Assignee (at issue)
Acuity Brands, 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.