Granted Patent
Utility
US 5,934,838 · App. 08/883,078
Modular wall block retaining wall reinforced by confinement cells for cut wall applications
Inventor:
Philip D. Egan
Patented Case
View Patent ↗
Granted: Aug 10, 1999
Filed: Jun 26, 1997
Inventor
Philip D. Egan
Assignee (at issue)
Tensar Corporation, LLC
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.