Granted Patent
Utility
US 5,438,862 · App. 08/195,498
System and method for in situ testing of the leak-tightness of a tubular member
Inventors:
Robert F. Keating, David A. Snyder
Patented Case
View Patent ↗
Granted: Aug 8, 1995
Filed: Feb 14, 1994
Inventors
Robert F. Keating
David A. Snyder
Assignee (at issue)
Westinghouse Elec. Corp.
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.