Granted Patent
Utility
US 5,200,259 · App. 07/748,618
Fiber-filled concrete overlay in cathodic protection
Inventors:
John J. Bartholomew, Thomas J. Gilligan
Patented Case
View Patent ↗
Granted: Apr 6, 1993
Filed: Aug 22, 1991
Inventors
John J. Bartholomew
Thomas J. Gilligan
Assignee (at issue)
Eltech Systems 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.