Granted Patent
Utility
US 4,253,022 · App. 06/036,969
Infrared detector array assembly with attached optical microphonics filter
Inventors:
David Allen, Charles M. Hanson
Patented Case
View Patent ↗
Granted: Feb 24, 1981
Filed: May 8, 1979
Inventors
David Allen
Charles M. Hanson
Assignee (at issue)
Texas Instruments Incorporated
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.