Granted Patent
Utility
US 4,592,426 · App. 06/679,787
Upper termination with sliding sleeve seals
Inventor:
Stephen A. Neely
Patented Case
View Patent ↗
Granted: Jun 3, 1986
Filed: Dec 10, 1984
Inventor
Stephen A. Neely
Assignee (at issue)
Hughes Tool Company LLC
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.