Granted Patent
Utility
US 5,615,740 · App. 08/496,775
Internal pressure sleeve for use with easily drillable exit ports
Inventors:
Laurier E. Comeau, Ian Gillis, Elis Vandenberg
Patented Case
View Patent ↗
Granted: Apr 1, 1997
Filed: Jun 29, 1995
Inventors
Laurier E. Comeau
Ian Gillis
Elis Vandenberg
Assignee (at issue)
Baroid Technology, 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.