Granted Patent
Utility
US 5,477,442 · App. 07/986,170
Light fixture for use in hazardous environments having adapter ring for alternative ballast housing
Inventor:
Margaret A. Self
Patented Case
View Patent ↗
Granted: Dec 19, 1995
Filed: Dec 4, 1992
Inventor
Margaret A. Self
Assignee (at issue)
Thomas & Betts, LLC
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.