Granted Patent
Utility
US 6,401,588 · App. 09/505,841
Delivery of emulsion explosive compositions through an oversized diaphragm pump
Inventors:
Kerry S. Atkinson, John B. Halander
Patented Case
View Patent ↗
Granted: Jun 11, 2002
Filed: Feb 17, 2000
Inventors
Kerry S. Atkinson
John B. Halander
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.