Granted Patent
Utility
US 5,238,063 · App. 07/925,718
Pressure balanced charge container for wellhead severing system
Inventor:
Joseph V. Hebert
Patented Case
View Patent ↗
Granted: Aug 24, 1993
Filed: Aug 4, 1992
Inventor
Joseph V. Hebert
Assignee (at issue)
Masx Energy Services Group, 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.