Granted Patent
Utility
US 4,466,484 · App. 06/383,166
Electrical device for promoting oil recovery
Inventor:
Andre J. Kermabon
Patented Case
View Patent ↗
Granted: Aug 21, 1984
Filed: May 28, 1982
Inventor
Andre J. Kermabon
Assignee (at issue)
Syminex
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.