Granted Patent
Utility
US 5,538,597 · App. 08/163,088
Apparatus for the discharge of a mass tower
Inventors:
Arto Koso, Voitto Reponen, Reijo Vesala
Patented Case
View Patent ↗
Granted: Jul 23, 1996
Filed: Dec 7, 1993
Inventors
Arto Koso
Voitto Reponen
Reijo Vesala
Assignee (at issue)
A. Ahlstrom Corporation
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.