Granted Patent
Utility
US 5,744,899 · App. 08/417,336
Illuminating lamp with enhanced far infrared radiation
Inventors:
Haengwoo Lee, Sookhee Kim
Patented Case
View Patent ↗
Granted: Apr 28, 1998
Filed: Apr 5, 1995
Inventors
Haengwoo Lee
Sookhee Kim
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.