Granted Patent
Utility
US 4,211,958 · App. 05/772,844
Phantom fluorescent lamp with safety switch
Inventors:
Elwood D. Bickford, Joel Shurgan
Patented Case
View Patent ↗
Granted: Jul 8, 1980
Filed: Feb 28, 1977
Inventors
Elwood D. Bickford
Joel Shurgan
Assignee (at issue)
Duro-Test Corporation
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.