Granted Patent
Utility
US 4,422,378 · App. 06/330,584
Means for and a method of initiating explosions
Inventor:
Bohumil M. J. Plichta
Patented Case
View Patent ↗
Granted: Dec 27, 1983
Filed: Dec 14, 1981
Inventor
Bohumil M. J. Plichta
Assignee (at issue)
IMPERIAL CHEMICAL INDUSTRIES LIMITED
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.