Granted Patent
Utility
US 4,474,628 · App. 06/512,467
Slurry explosive with high strength hollow spheres
Inventors:
Walter B. Sudweeks, Samuel O. Stock
Patented Case
View Patent ↗
Granted: Oct 2, 1984
Filed: Jul 11, 1983
Inventors
Walter B. Sudweeks
Samuel O. Stock
Assignee (at issue)
IRECO Chemicals
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.