Granted Patent
Utility
US 4,911,381 · App. 07/138,047
Energy-absorbing leg assembly for aircraft passenger seats
Inventors:
Mark R. Cannon, Richard E. Zimmerman, James C. Warrick
Patented Case
View Patent ↗
Granted: Mar 27, 1990
Filed: Dec 28, 1987
Inventors
Mark R. Cannon
Richard E. Zimmerman
James C. Warrick
Assignee (at issue)
Simula, 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.