Granted Patent
Utility
US 4,637,556 · App. 06/759,389
High efficiency separator system
Inventor:
Mark Dunn
Patented Case
View Patent ↗
Granted: Jan 20, 1987
Filed: Jul 26, 1985
Inventor
Mark Dunn
Assignee (at issue)
Combustion Engineering, 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.