Granted Patent
Utility
US 5,143,187 · App. 07/644,383
Energy absorber for horizontal lifelines in fall arrest systems
Inventors:
Raymond H. McQuarrie, Andrew C. Sulowski
Patented Case
View Patent ↗
Granted: Sep 1, 1992
Filed: Jan 22, 1991
Inventors
Raymond H. McQuarrie
Andrew C. Sulowski
Assignee (at issue)
Ontario Hydro
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.