Granted Patent
Utility
US 5,297,187 · App. 07/996,365
Pressure vessel penetration sealing device
Inventors:
Jan H. Sodergren, Harry K. Williams
Patented Case
View Patent ↗
Granted: Mar 22, 1994
Filed: Dec 23, 1992
Inventors
Jan H. Sodergren
Harry K. Williams
Assignee (at issue)
Combustion Engineering, 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.