Granted Patent
Utility
US 4,693,317 · App. 06/740,927
Method and apparatus for absorbing shock
Inventors:
A. Glen Edwards, David S. Wesson, Emmet F. Brieger
Patented Case
View Patent ↗
Granted: Sep 15, 1987
Filed: Jun 3, 1985
Inventors
A. Glen Edwards
David S. Wesson
Emmet F. Brieger
Assignee (at issue)
Halliburton
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.