Granted Patent
Utility
US 4,383,728 · App. 06/206,898
Carbon coated infra red reflectors
Inventor:
Alan H. Litington
Patented Case
View Patent ↗
Granted: May 17, 1983
Filed: Nov 14, 1980
Inventor
Alan H. Litington
Assignee (at issue)
NATIONAL RESEARCH DEVELOPMENT 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.