Granted Patent
Utility
US 4,037,172 · App. 04/309,560
Plastic laser materials
Inventors:
Nicolae Filipescu, Nelson McAvoy, Morton R. Kagan, Francis A. Serafin
Patented Case
View Patent ↗
Granted: Jul 19, 1977
Filed: Sep 17, 1963
Inventors
Nicolae Filipescu
Nelson McAvoy
Morton R. Kagan
Francis A. Serafin
Assignee (at issue)
American Standard Inc.
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.