Granted Patent
Utility
US 4,530,564 · App. 06/179,336
Method and apparatus for production of holographic optical elements
Inventor:
Donald H. Close
Patented Case
View Patent ↗
Granted: Jul 23, 1985
Filed: Aug 18, 1980
Inventor
Donald H. Close
Assignee (at issue)
Hughes Aircraft Company
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.