Granted Patent
Utility
US 4,614,156 · App. 06/816,975
Pressure responsive explosion initiator with time delay and method of use
Inventors:
Edward A. Colle, Jr., Flint R. George, Donald N. Yates, Jr.
Patented Case
View Patent ↗
Granted: Sep 30, 1986
Filed: Jan 6, 1986
Inventors
Edward A. Colle, Jr.
Flint R. George
Donald N. Yates, Jr.
Assignee (at issue)
Halliburton
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.