Granted Patent
Utility
US 5,875,721 · App. 08/654,187
Railway car truck and method and apparatus for velocity-dependent friction damping
Inventors:
James F. Wright, Aubra D. McKisic
Patented Case
View Patent ↗
Granted: Mar 2, 1999
Filed: May 28, 1996
Inventors
James F. Wright
Aubra D. McKisic
Assignee (at issue)
Hansen 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.