Granted Patent
Utility
US 5,513,668 · App. 08/194,325
Support for disk-shaped articles
Inventor:
Franz Sumnitsch
Patented Case
View Patent ↗
Granted: May 7, 1996
Filed: Feb 8, 1994
Inventor
Franz Sumnitsch
Assignee (at issue)
Sez Semiconductor-Equipment Zubehor Fur Die Halbleiterfertigung Gesellschaft m.b.H.
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.