Granted Patent
Utility
US 4,740,385 · App. 07/019,072
Apparatus for producing coils from films of insulating material, conductively coated in a vacuum
Inventors:
Albert Feuerstein, Helmut Eberhardt, Helmut Lammermann, Volker Bauer, Gerald Lobig
Patented Case
View Patent ↗
Granted: Apr 26, 1988
Filed: Feb 26, 1987
Inventors
Albert Feuerstein
Helmut Eberhardt
Helmut Lammermann
Volker Bauer
Gerald Lobig
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.