Granted Patent
Utility
US 6,056,208 · App. 09/156,598
Apparatus for preventing dripping from conduit openings
Inventors:
Willibald Pirker, Franz Sumnitsch
Patented Case
View Patent ↗
Granted: May 2, 2000
Filed: Sep 18, 1998
Inventors
Willibald Pirker
Franz Sumnitsch
Assignee (at issue)
SEZ Semiconductor-Equipment Zubehor fur die Halbleiterfertigung AG
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.