Granted Patent
Utility
US 6,158,816 · App. 08/964,900
Energy absorbing torsion bar seat belt retractor with sharp onset property
Inventors:
Jefferson E. Howell, Simon Xunnan He
Patented Case
View Patent ↗
Granted: Dec 12, 2000
Filed: Nov 5, 1997
Inventors
Jefferson E. Howell
Simon Xunnan He
Assignee (at issue)
Breed Automotive Technology, 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.