Granted Patent
Utility
US 4,834,187 · App. 07/024,648
Explosion suppression system
Inventor:
Kenneth R. Bragg
Patented Case
View Patent ↗
Granted: May 30, 1989
Filed: Mar 11, 1987
Inventor
Kenneth R. Bragg
Assignee (at issue)
Parker-Hannifin Corporation
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.