Granted Patent
Utility
US 4,285,034 · App. 06/048,287
Enclosed industrial luminaire
Inventor:
Daryl Dean Sullivan
Patented Case
View Patent ↗
Granted: Aug 18, 1981
Filed: Jun 13, 1979
Inventor
Daryl Dean Sullivan
Assignee (at issue)
Johns Manville
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.