Granted Patent
Utility
US 4,934,788 · App. 07/028,356
Deposition of gradient index coatings using coevaporation with rate control
Inventor:
William H. Southwell
Patented Case
View Patent ↗
Granted: Jun 19, 1990
Filed: Mar 20, 1987
Inventor
William H. Southwell
Assignee (at issue)
Rockwell International 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.