Granted Patent
Utility
US 4,434,217 · App. 06/222,714
Chalcogenide product
Inventors:
Joseph I. Masters, Gershon M. Goldberg
Patented Case
View Patent ↗
Granted: Feb 28, 1984
Filed: Jan 5, 1981
Inventors
Joseph I. Masters
Gershon M. Goldberg
Assignee (at issue)
GCA 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.