Granted Patent
Utility
US 4,487,261 · App. 06/290,215
Well completion and testing system
Inventor:
Imre I. Gazda
Patented Case
View Patent ↗
Granted: Dec 11, 1984
Filed: Aug 5, 1981
Inventor
Imre I. Gazda
Assignee (at issue)
Otis Engineering 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.