Granted Patent
Utility
US 4,374,686 · App. 06/242,531
Delay composition for detonators
Inventors:
Alan L. Davitt, Kenneth A. Yuill
Patented Case
View Patent ↗
Granted: Feb 22, 1983
Filed: Mar 11, 1981
Inventors
Alan L. Davitt
Kenneth A. Yuill
Assignee (at issue)
CXA LTD./CXA LTEE
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.