Granted Patent
Utility
US 6,761,781 · App. 09/472,800
High density ANFO
Inventors:
Lawrence D. Lawrence, Richard H. Granholm
Patented Case
View Patent ↗
Granted: Jul 13, 2004
Filed: Dec 28, 1999
Inventors
Lawrence D. Lawrence
Richard H. Granholm
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.