Granted Patent
Utility
US 5,580,384 · App. 08/416,464
Method and apparatus for chemical coating on opposite surfaces of workpieces
Inventors:
Francis Thiebaud, Heinrich Zimmermann
Patented Case
View Patent ↗
Granted: Dec 3, 1996
Filed: Apr 3, 1995
Inventors
Francis Thiebaud
Heinrich Zimmermann
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.