Granted Patent
Utility
US 4,886,843 · App. 07/147,866
Dual-cure cement
Inventor:
Ian Walton
Patented Case
View Patent ↗
Granted: Dec 12, 1989
Filed: Jan 25, 1988
Inventor
Ian Walton
Assignee (at issue)
IMPERIAL CHEMICAL INDUSTRIES LIMITED
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.