Granted Patent
Utility
US 5,181,589 · App. 07/755,902
Reversible impact damper, in particular for vehicles
Inventors:
Helge Siegner, Edgar Prottengeier
Patented Case
View Patent ↗
Granted: Jan 26, 1993
Filed: Sep 6, 1991
Inventors
Helge Siegner
Edgar Prottengeier
Assignee (at issue)
SUSPA 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.