Granted Patent
Utility
US 5,584,222 · App. 08/620,395
Method for charging bore-holes with explosive
Inventors:
Bjorn Engsbraten, Rolf C. G. Magnusson
Patented Case
View Patent ↗
Granted: Dec 17, 1996
Filed: Mar 22, 1996
Inventors
Bjorn Engsbraten
Rolf C. G. Magnusson
Assignee (at issue)
Nitro Nobel AB
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.