Granted Patent
Utility
US 6,364,072 · App. 09/067,371
Sintered material for a magnetic track brake
Inventors:
Friedemann Grupp, Uwe Kroger, Eckart Saumweber, Wolfgang Schröer, Wolfgang Valentin
Patented Case
View Patent ↗
Granted: Apr 2, 2002
Filed: Apr 27, 1998
Inventors
Friedemann Grupp
Uwe Kroger
Eckart Saumweber
Wolfgang Schröer
Wolfgang Valentin
Assignees (at issue)
AlliedSignal Bremsbelag GmbH
KNORR-BREMSE SYSTEME FÜR SCHIENENFAHRZEUGE GMBH
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.