Granted Patent
Utility
US 5,383,740 · App. 08/100,977
Combination mechanical/grout sleeve coupling for concrete reinforcement bars
Inventor:
Harry B. Lancelot, III
Patented Case
View Patent ↗
Granted: Jan 24, 1995
Filed: Aug 2, 1993
Inventor
Harry B. Lancelot, III
Assignee (at issue)
Richmond Screw Anchor Company
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.