Granted Patent
Utility
US 4,138,281 · App. 05/848,670
Production of explosive emulsions
Inventors:
Robert S. Olney, Charles Gordon Wade
Patented Case
View Patent ↗
Granted: Feb 6, 1979
Filed: Nov 4, 1977
Inventors
Robert S. Olney
Charles Gordon Wade
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.