Granted Patent
Utility
US 5,080,189 · App. 07/682,799
Electro-hydraulic dipole vibrator
Inventor:
Jack H. Cole
Patented Case
View Patent ↗
Granted: Jan 14, 1992
Filed: Apr 8, 1991
Inventor
Jack H. Cole
Assignee (at issue)
Conoco Inc.
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.