Granted Patent
Utility
US 4,714,857 · App. 06/854,324
Infrared reflective lamp with envelope having straight sections
Inventor:
Irving S. Goldstein
Patented Case
View Patent ↗
Granted: Dec 22, 1987
Filed: Apr 21, 1986
Inventor
Irving S. Goldstein
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.