Granted Patent
Utility
US 4,953,497 · App. 07/115,263
Apparatus for coating continuous webs
Inventor:
Hans Kessler
Patented Case
View Patent ↗
Granted: Sep 4, 1990
Filed: Oct 30, 1987
Inventor
Hans Kessler
Assignee (at issue)
Leybold 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.