Granted Patent
Utility
US 4,887,544 · App. 07/167,940
Vacuum well process
Inventor:
Patrick Nunally
Patented Case
View Patent ↗
Granted: Dec 19, 1989
Filed: Mar 14, 1988
Inventor
Patrick Nunally
Assignee (at issue)
General Dynamics Corporation, Pomona Div.
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.