Granted Patent
Utility
US 6,240,934 · App. 09/036,107
Method and device for treating holes or recesses extending into workpieces with liquid treatment media
Inventors:
Franz Durst, Günter Brenn, Michael Schäfer, Heinrich Meyer, Heribert Streup
Patented Case
View Patent ↗
Granted: Jun 5, 2001
Filed: Aug 16, 2000
Inventors
Franz Durst
Günter Brenn
Michael Schäfer
Heinrich Meyer
Heribert Streup
Assignee (at issue)
Atotech Deutschland 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.