Granted Patent
Utility
US 5,907,119 · App. 08/899,823
Method of preventing afterblast sulfide dust explosions
Inventor:
Don H. Cranney
Patented Case
View Patent ↗
Granted: May 25, 1999
Filed: Jul 24, 1997
Inventor
Don H. Cranney
Assignee (at issue)
Dyno Nobel 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.