Granted Patent
Utility
US 5,454,890 · App. 08/014,627
Cap-sensitive packaged emulsion explosive
Inventors:
William Brian Evans, Anh D. Nguyen
Patented Case
View Patent ↗
Granted: Oct 3, 1995
Filed: Feb 8, 1993
Inventors
William Brian Evans
Anh D. Nguyen
Assignee (at issue)
ICI Canada, 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.