Granted Patent
Utility
US 6,749,367 · App. 10/279,372
Orifice shield for a drainage conduit in a wastewater treatment drain field
Inventor:
Theophilus B. Terry, III
Patented Case
View Patent ↗
Granted: Jun 15, 2004
Filed: Oct 24, 2002
Inventor
Theophilus B. Terry, III
Assignee (at issue)
Harry L. Nurse, Jr.
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.