Granted Patent
Utility
US 5,992,431 · App. 09/056,586
Device for treating substrates in a fluid container
Inventors:
Martin Weber, John Oshinowo
Patented Case
View Patent ↗
Granted: Nov 30, 1999
Filed: Apr 7, 1998
Inventors
Martin Weber
John Oshinowo
Assignee (at issue)
Steag Micro Tech 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.