Granted Patent
Utility
US 4,627,989 · App. 06/639,363
Method and system for a vacuum evaporative deposition process
Inventors:
Albert Feuerstein, Gernot Thorn, Horst Ranke
Patented Case
View Patent ↗
Granted: Dec 9, 1986
Filed: Aug 8, 1984
Inventors
Albert Feuerstein
Gernot Thorn
Horst Ranke
Assignee (at issue)
Leybold-Heraeus GmbH
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.