Granted Patent
Utility
US 6,554,529 · App. 09/799,905
Energy-absorbing assembly for roadside impact attenuator
Inventors:
Barry D. Stephens, Michael J. Buehler
Patented Case
View Patent ↗
Granted: Apr 29, 2003
Filed: Mar 5, 2001
Inventors
Barry D. Stephens
Michael J. Buehler
Assignee (at issue)
ENERGY ABSORPTION SYSTEMS, INC.
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.