Granted Patent
Utility
US 5,490,562 · App. 08/384,924
Subsea flow enhancer
Inventor:
Kenneth E. Arnold
Patented Case
View Patent ↗
Granted: Feb 13, 1996
Filed: Feb 7, 1995
Inventor
Kenneth E. Arnold
Assignee (at issue)
Paragon Engineering Services, 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.