Granted Patent
Utility
US 4,400,410 · App. 06/292,432
Coating insulating materials by glow discharge
Inventors:
Geoffrey W. Green, Alan H. Lettington
Patented Case
View Patent ↗
Granted: Aug 23, 1983
Filed: Aug 14, 1981
Inventors
Geoffrey W. Green
Alan H. Lettington
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.