Granted Patent
Utility
US 6,073,438 · App. 09/021,315
Preparation of eutectic mixtures of ammonium nitrate and amino guanidine nitrate
Inventors:
Robert S. Scheffee, Brian K. Wheatley
Patented Case
View Patent ↗
Granted: Jun 13, 2000
Filed: Feb 10, 1998
Inventors
Robert S. Scheffee
Brian K. Wheatley
Assignee (at issue)
Atlantic Research Group LLC
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.