Granted Patent
Utility
US 5,034,071 · App. 07/538,127
Prill for emulsion explosives
Inventor:
Catharine VanOmmeren
Patented Case
View Patent ↗
Granted: Jul 23, 1991
Filed: Jun 14, 1990
Inventor
Catharine VanOmmeren
Assignee (at issue)
Atlas Powder Company
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.