Granted Patent
Utility
US 6,247,828 · App. 08/400,325
Unitary extruded housing for direct-indirect luminaire
Inventor:
Douglas J. Herst
Patented Case
View Patent ↗
Granted: Jun 19, 2001
Filed: Mar 9, 1995
Inventor
Douglas J. Herst
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.