Granted Patent
Utility
US 5,431,757 · App. 08/197,704
Water in oil emulsion explosives containing a nitrate salt with an untamped density of 0.30-0.75 g/cm.sup.3
Inventors:
Bjorn R. Petterson, Kjell Hanto
Patented Case
View Patent ↗
Granted: Jul 11, 1995
Filed: Feb 17, 1994
Inventors
Bjorn R. Petterson
Kjell Hanto
Assignee (at issue)
Dyno Industrier ASA
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.