Granted Patent
Utility
US 5,379,693 · App. 07/986,425
Welded tubular printing plate, and the method of making
Inventors:
Eduard Hoffmann, Johann Winterholler, Wolfgang Prem, Herbert Stockl
Patented Case
View Patent ↗
Granted: Jan 10, 1995
Filed: Dec 4, 1992
Inventors
Eduard Hoffmann
Johann Winterholler
Wolfgang Prem
Herbert Stockl
Assignee (at issue)
MAN Roland Druckmaschinen 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.