Granted Patent
Utility
US 4,798,474 · App. 07/111,509
In-situ pipeline coating system
Inventor:
Joseph V. Daily
Patented Case
View Patent ↗
Granted: Jan 17, 1989
Filed: Oct 22, 1987
Inventor
Joseph V. Daily
Assignee (at issue)
Union Carbide Corporation
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.