Granted Patent
Utility
US 4,521,798 · App. 06/355,835
Infra-red radiation imaging devices and methods for their manufacture
Inventor:
Ian Baker
Patented Case
View Patent ↗
Granted: Jun 4, 1985
Filed: Mar 8, 1982
Inventor
Ian Baker
Assignee (at issue)
U.S. Philips 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.