Granted Patent
Utility
US 6,739,629 · App. 10/176,323
Bell and spigot joint with locking strap
Inventors:
Charles H. Riedy, Dennis P. Revlock, Sr.
Patented Case
View Patent ↗
Granted: May 25, 2004
Filed: Jun 20, 2002
Inventors
Charles H. Riedy
Dennis P. Revlock, Sr.
Assignee (at issue)
The Lamson & Sessions Co.
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.