Granted Patent
Utility
US 5,000,575 · App. 07/403,649
Method of fabricating gradient index optical films
Inventors:
William H. Southwell, Randolph L. Hall
Patented Case
View Patent ↗
Granted: Mar 19, 1991
Filed: Sep 6, 1989
Inventors
William H. Southwell
Randolph L. Hall
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.