Granted Patent
Utility
US 4,973,451 · App. 07/196,956
Flame arresting conduit section, combustor and method
Inventor:
Earl Vickery
Patented Case
View Patent ↗
Granted: Nov 27, 1990
Filed: May 20, 1988
Inventor
Earl Vickery
Assignee (at issue)
Hoechst Celanese Corporation
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.