Granted Patent
Utility
US 4,717,449 · App. 06/890,874
Dielectric barrier material
Inventors:
David G. Erie, Jon A. Roberts, Eddie Lee
Patented Case
View Patent ↗
Granted: Jan 5, 1988
Filed: Jul 25, 1986
Inventors
David G. Erie
Jon A. Roberts
Eddie Lee
Assignee (at issue)
Honeywell Limited
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.