Granted Patent
Utility
US 6,729,648 · App. 10/165,333
Non-linear energy absorbing column assembly
Inventor:
Peter J. Ulintz
Patented Case
View Patent ↗
Granted: May 4, 2004
Filed: Jun 7, 2002
Inventor
Peter J. Ulintz
Assignee (at issue)
SEALY TECHNOLOGY LLC
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.