Granted Patent
Utility
US 6,190,023 · App. 08/838,402
Sporting field illuminating lighting fixtures having improved light distribution
Inventors:
Kevin F. Leadford, Jeffrey Mansfield Quinlan
Patented Case
View Patent ↗
Granted: Feb 20, 2001
Filed: Apr 7, 1997
Inventors
Kevin F. Leadford
Jeffrey Mansfield Quinlan
Assignee (at issue)
NSI Enterprises, 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.