Granted Patent
Utility
US 4,876,124 · App. 07/208,333
Underground tank
Inventor:
Barry J. Dallum
Patented Case
View Patent ↗
Granted: Oct 24, 1989
Filed: Jun 16, 1988
Inventor
Barry J. Dallum
Assignee (at issue)
Owens-Corning Fiberglas Corp.
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.