Granted Patent
Utility
US 5,582,686 · App. 08/093,531
High pressure water jet comminuting
Inventors:
David E. Chupka, Peter Seifert, Christopher M. Vitori
Patented Case
View Patent ↗
Granted: Dec 10, 1996
Filed: Jul 16, 1993
Inventors
David E. Chupka
Peter Seifert
Christopher M. Vitori
Assignee (at issue)
Black Clawson Company, 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.