Granted Patent
Utility
US 5,285,877 · App. 07/940,914
Impact damper
Inventors:
Hartmut Bonenberger, Holger Kirchner, Kurt Wagner
Patented Case
View Patent ↗
Granted: Feb 15, 1994
Filed: Sep 8, 1992
Inventors
Hartmut Bonenberger
Holger Kirchner
Kurt Wagner
Assignee (at issue)
Boge 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.