Granted Patent
Utility
US 5,648,147 · App. 08/401,204
optical device and method for coating an optical substrate
Inventors:
Roman Bischof, Markus Höfer, Albert Koller, Christian Wohlrab
Patented Case
View Patent ↗
Granted: Jul 15, 1997
Filed: Mar 9, 1995
Inventors
Roman Bischof
Markus Höfer
Albert Koller
Christian Wohlrab
Assignee (at issue)
Balzers Aktiengesellschaft
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.