Granted Patent
Utility
US 6,775,952 · App. 10/210,464
System of protecting the edges of cast-in-place concrete slab on ground, construction joints
Inventors:
Russell Boxall, Nigel Parkes, Patrick N. Harrison
Patented Case
View Patent ↗
Granted: Aug 17, 2004
Filed: Jul 31, 2002
Inventors
Russell Boxall
Nigel Parkes
Patrick N. Harrison
Assignee (at issue)
Permaban North America, Inc.
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.