Granted Patent
Utility
US 5,992,198 · App. 09/206,321
Method and device for producing a tube in a tube plate
Inventors:
Francisco Blangetti, Harald Fuchs
Patented Case
View Patent ↗
Granted: Nov 30, 1999
Filed: Dec 7, 1998
Inventors
Francisco Blangetti
Harald Fuchs
Assignee (at issue)
Asea Brown Boveri, S.A.
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.