Granted Patent
Utility
US 4,328,175 · App. 06/081,041
Apparatus for contacting a liquid with a gas
Inventors:
Winfried Roeckel, Carl Scaccia, John Conti
Patented Case
View Patent ↗
Granted: May 4, 1982
Filed: Oct 2, 1979
Inventors
Winfried Roeckel
Carl Scaccia
John Conti
Assignee (at issue)
Union Carbide 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.