Granted Patent
Utility
US 6,160,957 · App. 09/355,128
Infrared radiation panel
Inventor:
Lars-Goran Johansson
Patented Case
View Patent ↗
Granted: Dec 12, 2000
Filed: Jul 29, 1999
Inventor
Lars-Goran Johansson
Assignee (at issue)
KANTHAL AB
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.