Granted Patent
Utility
US 5,901,449 · App. 08/928,190
Cutting appliance for filament-type material
Inventors:
Armin Ulbrich, Ulrich Wiebe
Patented Case
View Patent ↗
Granted: May 11, 1999
Filed: Sep 12, 1997
Inventors
Armin Ulbrich
Ulrich Wiebe
Assignee (at issue)
Rohm and Haas Company
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.