Granted Patent
Utility
US 4,414,049 · App. 06/305,753
Method of manufacture of an energy absorbing beam
Inventor:
Brian Jones
Patented Case
View Patent ↗
Granted: Nov 8, 1983
Filed: Sep 25, 1981
Inventor
Brian Jones
Assignee (at issue)
KELSEY-HAYES-COMPANY
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.