Granted Patent
Utility
US 6,048,391 · App. 08/934,265
Means for and methods of preparing a glue for corrugated board
Inventors:
Anton de Valk, William van der Zanden
Patented Case
View Patent ↗
Granted: Apr 11, 2000
Filed: Sep 19, 1997
Inventors
Anton de Valk
William van der Zanden
Assignee (at issue)
Serco Holland
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.