Granted Patent
Utility
US 4,493,261 · App. 06/547,861
Reinforced explosive shock tube
Inventors:
James R. Simon, David J. Welburn
Patented Case
View Patent ↗
Granted: Jan 15, 1985
Filed: Nov 2, 1983
Inventors
James R. Simon
David J. Welburn
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.