Granted Patent
Utility
US 6,431,073 · App. 09/341,395
Device, system and method for on-line explosive deslagging
Inventors:
Francis Zilka, Timothy Zilka, Kurt Prouty, Donald Howard
Patented Case
View Patent ↗
Granted: Aug 13, 2002
Filed: Jul 8, 1999
Inventors
Francis Zilka
Timothy Zilka
Kurt Prouty
Donald Howard
Assignee (at issue)
North American Industrial Services Inc.
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.