Granted Patent
Utility
US 4,428,784 · App. 06/472,721
Blasting compositions containing sodium nitrate
Inventors:
Harvey A. Jessop, Albert G. Funk
Patented Case
View Patent ↗
Granted: Jan 31, 1984
Filed: Mar 7, 1983
Inventors
Harvey A. Jessop
Albert G. Funk
Assignee (at issue)
IRECO Chemicals
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.