Granted Patent
Utility
US 6,183,199 · App. 09/271,267
Cooling-air bore
Inventors:
Alexander Beeck, Bernhard Bonhoff, Gunter Wilfert
Patented Case
View Patent ↗
Granted: Feb 6, 2001
Filed: Mar 17, 1999
Inventors
Alexander Beeck
Bernhard Bonhoff
Gunter Wilfert
Assignee (at issue)
ABB RESEARCH LTD.
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.