Granted Patent
Utility
US 5,989,015 · App. 08/961,227
Variable flame retention device utilizing an interwoven flexible wire metal gauze
Inventors:
William Guerin, Valerie Bosso, Bernard Verbeke
Patented Case
View Patent ↗
Granted: Nov 23, 1999
Filed: Oct 30, 1997
Inventors
William Guerin
Valerie Bosso
Bernard Verbeke
Assignee (at issue)
Gaz de France-(GDF) Service National
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.